Jerusalem Talmud Nedarim 6:4:2-8:1

Sugya Map

This Yerushalmi sugya in Nedarim 6:4:2-8:1 delves into the intricacies of nedarim (vows), specifically how their scope is determined by linguistic usage and the relationship between a primary food item and its derivatives or related species. A significant portion of the sugya then veers into an extensive discussion on the rules and authority surrounding the intercalation of the calendar, a common characteristic of the Yerushalmi's associative logic.

Core Issues & Nafka Minas:

• Linguistic Interpretation of Vows: The fundamental question is how to interpret a vow made using a general term. Does "milk" (חלב) include its derivatives like curd or whey (קום)? Does "meat" (בשר) include bouillon (רוטב) or coagulated fibers (קיפה)? Does "grapes" (ענבים) include "wine" (יין)?
  • Nafka Mina: The permissibility of consuming derivatives or related items when a vow is made on the primary item. This involves a dispute between the Sages (מתירין) and R. Yose (אוסר) regarding milk/curd, and a parallel dispute between the Sages and R. Yehuda regarding meat/broth.
• General vs. Specific Vows: The sugya distinguishes between a general vow (e.g., "meat") and a specific vow (e.g., "this meat").
  • Nafka Mina: A specific vow is treated more stringently, potentially extending to any usufruct (הנאה) or taste (טעם) from the forbidden item, even if mixed.
• The Machloket of R. Yehuda ben Bathyra: Whether a vow against an item (e.g., dates) also forbids its derivative (date honey) if the derivative's name (דבש) is sometimes used to refer to the primary item (as "honey" for dates in Devarim 8:8).
  • Nafka Mina: This dictates whether a vow on "dates" would automatically forbid "date honey," beyond the general principles.
• Scope of General Terms & Local Custom: The Mishnah provides examples where a general term (e.g., "wine," "oil," "leeks," "vegetables") does not include specific sub-types (e.g., apple wine, sesame oil, field leeks, field vegetables), asserting that these are "accompanying names" (שם לווי).
  • Nafka Mina: This introduces the principle of lashon bnei adam (common linguistic usage) and rechovon shel ir (local custom) as the primary determinant for the scope of a vow.
• Status of Vows in Mixtures (Bitul): The sugya grapples with whether vows fall under the category of "things that can become permitted through some action" (דבר שיש לו מתירין) or "things that cannot become permitted" (דבר שאין לו מתירין) regarding bitul b'ta'am (nullification by taste) in mixtures.
  • Nafka Mina: This affects the threshold for prohibition when a vowed item is mixed with permitted food. If it's davar she'yesh lo matirin, bitul b'ta'am applies; if davar she'ein lo matirin, even a minute amount might forbid.
• The Authority of Calendar Intercalation: An extensive digression, seemingly unconnected, discusses the rules for intercalating months and years (עיבור שנה), the proper authority for doing so, and historical precedents (King Hezekiah, Hananiah the nephew of R. Yehoshua).
  • Nafka Mina: This section, while not directly about vows, reflects on the authority of Chazal to define reality and establish parameters for halakha, a meta-point relevant to the interpretation of vows as well. It also touches on practical implications for agricultural laws (like shevi'it) and holiday observance.

Primary Sources:

• Mishnah Nedarim 6:4-8: The foundational text for the various cases of vows and their scope.
  • "הנודר מן החלב מותר בקום ורבי יוסי אוסר... הנודר מן הגבינה אסור בה בין מלוחה בין טפלה" (Nedarim 6:4:1:1-2)
  • "הנודר מן הבשר מותר ברוטב ובקיפה ורבי יהודה אוסר" (Nedarim 6:5:1:1)
  • "הנודר מן הענבים מותר ביין... קונם שאני טועם זיתים הללו או ענבים הללו אסור בהן ובכל היוצא מהן" (Nedarim 6:6:1:1)
  • "הנודר מן התמרים מותר בדבש תמרים... רבי יהודה בן בתירא אומר כל דבר ששם יורדו נקרא עליו הרי זה אסור וחכמים מתירין" (Nedarim 6:8:1:1)
  • "הנודר מן היין מותר ביין תפוחים... מפני שזה שם לווי" (Nedarim 6:9:1:1)
• Yerushalmi Nedarim 6:4:2-8:1 (Halakhah sections): Expands on the Mishnah, defines terms, presents reasoning, and introduces tangential discussions.
  • "מה טעמיה דרבי יוסי? ששם אביו נקרא עליו" (Nedarim 6:4:2:1)
  • "רבי שמעון בן אלעזר אומר קונם כל דבר הנאכל ויוצא הימנו דבר הנאכל ונדר ממנו היתר" (Nedarim 6:7:1:1)
  • The extensive sugya on עיבור שנה (Nedarim 6:8:15-9:1 and onwards), including citations from Tosefta Sanhedrin 2:5-7, II Kings 4:42, II Chronicles 30, and other Tanakhic passages.
• Tosefta Nedarim 3:3: Cited in the Yerushalmi regarding R. Shimon ben Elazar's categorization of vows.
• Tosefta Sanhedrin 2:5-7: Cited extensively in the Yerushalmi's digression on calendar intercalation.
• Tanakhic References: Numerous verses from Divrei HaYamim (II Chronicles 28-32), Melakhim (II Kings 4, 16, 18, 20, 24), Vayikra (23), Bamidbar (9), Yeshayahu (2), Yirmiyahu (29), Tehillim (57) – primarily within the calendar digression.

Text Snapshot

The sugya opens with a core dispute concerning the interpretation of vows.

Mishnah (Nedarim 6:4:1:1-2):

הנודר מן החלב מותר בקום ורבי יוסי אוסר. מן הקום מותר בחלב. אבא שאול אומר: הנודר מן הגבינה אסור בה בין מלוחה בין טפלה. Translation: If somebody vows not to drink milk, he is permitted curd, but Rebbi Yose forbids. But from curd, he is permitted milk. Abba Shaul says, if he vows not to have cheese, it is forbidden to him whether salted or unsalted.

• Dikduk/Leshon Nuance:
  • "חלב" (milk) is the general term.
  • "קום" (curd/whey) is the derivative. The Mishnah presents a machloket (dispute) on whether the vow on "milk" extends to "קום." R. Yose (אוסר - forbids) versus the Sages (מותר - permits). This sets the stage for the recurring theme of literal interpretation versus broader understanding.
  • "מן הקום מותר בחלב" – This implies that even R. Yose would agree that vowing against "curd" does not forbid "milk," as the general term "milk" doesn't necessarily encompass its specific derivative when the vow is made on the derivative. This asymmetry is key.
  • "גבינה" (cheese) is introduced, with Abba Shaul clarifying that a vow on cheese forbids all cheese, whether "מלוחה" (salted) or "טפלה" (unsalted), indicating a comprehensive prohibition within the category.

Halakhah (Nedarim 6:4:2:1):

"הנודר מן החלב מותר בקום" וכו'. מאי קום? חלבא מקטרא. מה טעמיה דרבי יוסי? ששם אביו נקרא עליו. Translation: "If somebody vows not to drink milk, he is permitted curd," etc. What is curd? Curdled milk. What is the reason of Rebbi Yose? The name of its father is called over it.

• Dikduk/Leshon Nuance:
  • "מאי קום? חלבא מקטרא" – The Yerushalmi defines "קום" as "curdled milk." This clarifies the substance under discussion. The Sefaria footnote adds: "This is the definition of the Yerushalmi. The definition of Rashi and the Arukh is: the serum remaining when curd is pressed into cheese." This highlights a potential divergence in understanding the precise nature of "קום" (whey vs. curdled milk), which could influence the halakha.
  • "ששם אביו נקרא עליו" – R. Yose's reasoning. The "father" refers to milk. If the derivative's name still invokes its origin (e.g., "curd of milk"), then a vow on the origin extends to the derivative. This introduces a significant hermeneutic principle for nedarim.

Halakhah (Nedarim 6:4:2:1 – Continuation, introducing Bitul):

וכי לדעתיה דרבי יוסי הנודר מן היין מותר ביין מבושל? יין מבושל! "זה הכלל דרש ר' שמעון משום ר' יהושע: כל דבר שיש לו מתירין לא קבעו לו חכמים שיעור... וכל דבר שאין לו מתירין קבעו לו חכמים שיעור... נדרים מה את עביד להון? כדברים שיש להן מתירין, או כדברים שאין להן מתירין? מסתברא כדברים שיש להן מתירין... אמרין: אינו עוקר אלא מכאן ולהבא. ודאי משנה כדברים שאין להן מתירין..." Translation: In the opinion of Rebbi Yose, is one who vows not to taste wine permitted cooked wine? Cooked wine! "This is the rule Rebbi Simeon declared in the name of Rebbi Joshua: For everything that may become permitted through some action... the Sages did not fix any limits, but a kind with its own is forbidden in the minutest amount, a kind with a different kind if it can be tasted. But for everything that cannot become permitted through any action... the Sages did fix as limit both a kind with itself or with a different kind if it can be tasted." How do you treat vows? As referring to something that can become permitted or to something that cannot become permitted? It seems reasonable that we treat them as referring to things that can become permitted... They said, he only uproots for the future. Certainly a Mishnah treats it as referring to something that cannot become permitted...

• Dikduk/Leshon Nuance:
  • "יין מבושל" (cooked wine) – This term is crucial. Cooked wine has lost its alcoholic properties, changing its nature, yet it may still be called "wine." This tests R. Yose's principle.
  • "דבר שיש לו מתירין" vs. "דבר שאין לו מתירין" – This is a core halakhic distinction for mixtures. Tevel (produce from which tithes haven't been separated) is davar she'yesh lo matirin because separation renders it permitted. Orlah (fruit from the first three years of a tree) is davar she'ein lo matirin because it's permanently forbidden. The sugya struggles to categorize vows within this framework.
  • "עוקר את הנדר מן השורש" vs. "אינו עוקר אלא מכאן ולהבא" – The dispute regarding the retroactive effect of hatarat nedarim (vow annulment) has profound implications for how vows are categorized in relation to mixtures.

Mishnah (Nedarim 6:9:1:1):

הנודר מן היין מותר ביין תפוחים. לא מן השמן מותר בשמן שומשמין. לא מן הדבש מותר בדבש תמרים. לא מן החומץ מותר בחומץ סיתוניות. לא מן הכרישין מותר בקפלוטות. מן הירקות מותר בירקות שדה, מפני שזה שם לווי. Translation: If somebody vows not to use wine, he is permitted apple wine. Not oil, he is permitted sesame oil. Not honey, he is permitted date honey. Not vinegar, he is permitted winter grape vinegar. Not leeks, he is permitted field leeks. Of vegetables, he is permitted field vegetables, because that is an accompanying name.

• Dikduk/Leshon Nuance:
  • "שם לווי" (accompanying name) – This is the explanatory principle. When a general term (e.g., "wine") is used, it refers to the primary, most common type (grape wine), and specific varieties (apple wine) are not included because they require an "accompanying name" to distinguish them. This strongly reinforces the role of lashon bnei adam.

Halakhah (Nedarim 6:9:1:1 – Continuation, the Calendar Digression):

"הנודר מן היין מותר ביין תפוחים" וכו'. המתניתין במקום שאין קורין קפלוטות כרישין. אבל במקום שקורין קפלוטות כרישין. וצריכה ליתא אפילו במקום שקורין קפלוטות כרישין: "לא מן הכרישין מותר בקפלוטות." Translation: "If somebody vows not to use wine," etc. The Mishnah speaks of a place where one does not call field leeks leeks. But not at a place where one calls field leeks leeks. Just in that case it is needed, even a place where one calls field leeks leeks: "Not leeks, he is permitted field leeks."

• Dikduk/Leshon Nuance: The Gemara refines the "שם לווי" principle, stating that the Mishnah's ruling is particularly necessary where the variant is sometimes called by the general name. However, the halakha still permits, implying that for nedarim, the primary referent of the general term is what is forbidden, unless the specific variant is always referred to by the general term in that place.
• The subsequent extensive discussion on calendar intercalation, King Hezekiah, and the authority of the Land of Israel (starting from Nedarim 6:8:15, "הנודר מן הירקות בשביעית...") is largely a textual interpolation from Yerushalmi Sanhedrin and other tractates, linked tenuously by the mention of "ירקות שדה" and agricultural issues in the Sabbatical year. This is a classic Yerushalmi phenomenon, where a slight thematic connection triggers a lengthy digression.

Readings

The sugya in Yerushalmi Nedarim 6:4-8 grapples with the fundamental principles governing the interpretation of vows. The core tension lies between a literal, etymological approach and one based on common linguistic usage (lashon bnei adam). Rishonim and Acharonim systematically develop these principles, often drawing distinctions between general categories and specific derivatives or varieties.

1. Penei Moshe and Korban HaEdah: Defining the Terms and R. Yose's Principle

The Penei Moshe and Korban HaEdah, the primary commentaries on the Yerushalmi, provide foundational definitions and elucidate the Gemara's reasoning. Their chiddush lies in clarifying the precise meaning of the Mishnah's terms and the underlying logic of the initial machloket.

a. Definition of "קום" (Curd/Whey):

Both Penei Moshe and Korban HaEdah agree on the meaning of "קום."

• Penei Moshe (Nedarim 6:4:1:1 s.v. מותר בקום): "הוא נסיובי דחלבא מים היוצאין מן הגבינה" (It is the serum of milk, water that comes out of cheese).
• Korban HaEdah (Nedarim 6:4:1:1 s.v. קום): "הוא נסיובי דחלבא והן מים היוצאים מן הגבינה" (It is the serum of milk, and they are waters that come out of cheese). This definition is critical. While the Yerushalmi's Halakhah defines "קום" as "חלבא מקטרא" (curdled milk - Nedarim 6:4:2:1), both these commentators clarify that it refers specifically to the liquid derivative – whey or serum – rather than solidified curd. This distinction might seem subtle, but it affects the nature of the derivative. If "קום" is merely milk that has congealed, it is more like "milk itself" than if it's a completely separated liquid. By defining it as "נסיובי דחלבא," they emphasize its distinct nature from fluid milk, bolstering the Sages' position that a vow on "milk" does not automatically include "קום."

b. R. Yose's Reasoning: "ששם אביו נקרא עליו"

The Gemara explains R. Yose's dissenting opinion: "מה טעמיה דרבי יוסי? ששם אביו נקרא עליו" (Nedarim 6:4:2:1).

• Penei Moshe (Nedarim 6:4:2:1 s.v. חלבא מקטרא): While he defines "קום" as "חלבא מקטרא" here, consistent with the Yerushalmi, the sugya then immediately brings R. Yose's reason. R. Yose argues that if the derivative (curdled milk) is still linguistically associated with its "father" (milk), it is included in the vow. This means that if common usage refers to "קום" as "milk's curd" or "curdled milk," the vow extends. The Penei Moshe doesn't explicitly elaborate on this, but his definition of "קום" as "חלבא מקטרא" for R. Yose's view makes sense, as curdled milk is still very much "milk."

c. Abba Shaul's Ruling on Cheese:

Both commentators also clarify Abba Shaul's statement: "הנודר מן הגבינה אסור בה בין מלוחה בין טפלה" (Nedarim 6:4:1:2).

• Penei Moshe (Nedarim 6:4:1:2 s.v. אסור בה בין מלוחה בין טפלה): "דלא תימא מפני שרוב הגבינות מלוחות הן סתמא מלוחה משמע קא משמע לן" (Lest you say that because most cheeses are salted, an unqualified [vow] implies salted [cheese], it comes to teach us [otherwise]).
• Korban HaEdah (Nedarim 6:4:1:2 s.v. בין מלוחה בין תפילה): "דלא תימא מפני שרוב גבינות מלוחות הן סתמא מלוחה משמע קמ"ל" (Lest you say that because most cheeses are salted, an unqualified [vow] implies salted [cheese], it comes to teach us [otherwise]). Their chiddush here is to explain that Abba Shaul's statement is not merely descriptive but prescriptive. It addresses a potential minhag (custom) or assumption that "cheese" inherently means "salted cheese" due to its prevalence. Abba Shaul clarifies that a vow against "cheese" is comprehensive, covering all forms, irrespective of the common preserving method. This reinforces the idea that a vow on a general category covers all its sub-types, unless explicitly limited or the sub-type is considered a "שם לווי" (accompanying name) that completely distinguishes it.

In essence, Penei Moshe and Korban HaEdah lay the groundwork by defining the terms and explaining the initial machloket, highlighting the tension between the physical transformation of a food item and its enduring linguistic connection to its origin, a tension central to the sugya's entire scope.

2. Rambam (Mishneh Torah, Hilkhot Nedarim 9:8): The Primacy of "Lashon Bnei Adam"

The Rambam, in his Mishneh Torah, provides a systematic codification of the laws of vows. His chiddush is the unwavering and systematic application of the principle of lashon bnei adam (common linguistic usage) and rechovon shel ir (local custom of speech) as the ultimate determinant for interpreting the scope of a vow, often prioritizing convention over strict etymology or the specific reasoning of R. Yose. He transforms the sugya's debates into a clear, actionable legal framework.

a. Vows on Milk and its Derivatives:

• Mishneh Torah, Hilkhot Nedarim 9:8: "הנודר מן החלב מותר במי חלב והן הנקראין קום, ואין צריך לומר שאם נדר מן הקום מותר בחלב." (One who vows from milk is permitted whey, which is called kum, and it goes without saying that if he vowed from kum he is permitted milk.) The Rambam clearly rules in accordance with the Sages against R. Yose. He explicitly permits "מי חלב" (milk water/whey) for one who vowed from "חלב." This indicates that in his view, "חלב" (milk) as a general term does not, by common linguistic usage, encompass "קום," even if "קום" is derived from milk. The separation of liquid from solid (or curdled milk) creates a sufficiently distinct entity in common parlance. His formulation, "אין צריך לומר" (it goes without saying), further emphasizes the clear distinction: the derivative is not the original, nor is the original the derivative.

b. Vows on Cheese:

• Mishneh Torah, Hilkhot Nedarim 9:8: "הנודר מן הגבינה אסור בה בין מלוחה בין טפלה." (One who vows from cheese is forbidden it, whether salted or unsalted.) This directly codifies Abba Shaul's position in the Mishnah, confirming that a general vow on a category (cheese) applies to all its variations, regardless of common preparation methods (like salting). This reinforces the principle that unless a specific attribute creates a שם לווי (accompanying name) that makes it a distinct category, the general term is comprehensive.

c. Vows on Grapes/Olives and their Products:

• Mishneh Torah, Hilkhot Nedarim 9:8: "הנודר מן הענבים מותר ביין, מן הזיתים מותר בשמן. ואם אמר קונם ענבים אלו עלי אסור ביין היוצא מהם, ואם אמר קונם זיתים אלו עלי אסור בשמן היוצא מהם." (One who vows from grapes is permitted wine; from olives is permitted oil. But if he said, 'Konam, these grapes are forbidden to me,' he is forbidden the wine that comes from them; and if he said, 'Konam, these olives are forbidden to me,' he is forbidden the oil that comes from them.) Here, the Rambam introduces a crucial distinction between a general vow and a specific vow. A general vow from "grapes" does not include "wine" because "wine" has its own distinct name and is not merely "grapes" in liquid form (though derived from them). However, a vow on "these grapes" (emphasizing the specific item) makes the grapes themselves issurei hana'ah (forbidden for benefit), and therefore any product derived from them is also forbidden. This reflects the Yerushalmi's discussion on "קונם בשר זה עלי" (Nedarim 6:5:1:1) and its implications for usufruct.

d. The "Shem Livai" Principle:

• Mishneh Torah, Hilkhot Nedarim 9:8 (and 9:10-12): The Rambam extends this principle to other cases. For example, "הנודר מן היין מותר ביין תפוחים... מן השמן מותר בשמן שומשמין... מן הדבש מותר בדבש תמרים... מן הירקות מותר בירקות שדה, מפני שזה שם לווי" (One who vows from wine is permitted apple wine... from oil is permitted sesame oil... from honey is permitted date honey... from vegetables is permitted field vegetables, because that is an accompanying name). This directly codifies the Mishnah's concluding principle. The Rambam consistently applies that if a specific type of an item requires an "accompanying name" (e.g., "apple wine" vs. "wine"), then the general term (e.g., "wine") by default refers to the primary, most common form (grape wine), and the "accompanying name" item is permitted. This highlights the weight given to established linguistic conventions and the distinct identity of certain variants.

e. The Rejection of R. Yehuda ben Bathyra:

• The Mishnah (Nedarim 6:8:1) records R. Yehuda ben Bathyra's opinion that if an item is called by the name of its derivative (e.g., dates called "honey" in the Torah), then a vow on the item also forbids the derivative. The Sages permit. The Rambam, by consistently ruling that "הנודר מן התמרים מותר בדבש תמרים" (Nedarim 9:8), implicitly rejects R. Yehuda ben Bathyra's position. This emphasizes that even scriptural linguistic associations do not override common parlance for the purpose of vows, further cementing the primacy of lashon bnei adam.

In summation, the Rambam's chiddush is the systematic and comprehensive application of lashon bnei adam. He constructs a clear hierarchy: general vows are interpreted according to the most common referent of the term in a given place and time; specific vows ("this X") are stricter, prohibiting derivatives; and items requiring a שם לווי are generally excluded from a vow on the general term. He establishes a coherent framework that resolves the various disputes and ambiguities presented in the Yerushalmi, placing the authority of common usage at the forefront of halakhic interpretation for nedarim.

3. Tur (Yoreh De'ah 217): Comprehensive Application and Local Variance

The Tur, Rabbi Yaakov ben Asher, in his Arba'ah Turim, dedicates a substantial section (Yoreh De'ah 217) to Hilkhot Nedarim. His chiddush lies in providing an exceedingly comprehensive and detailed application of the lashon bnei adam principle across a vast array of cases, often referencing and synthesizing various Rishonim, including the Rambam. He emphasizes the dynamic nature of lashon (language), stressing that interpretation must be fluid, adapting "לפי המקום והזמן" (according to the place and time). The Tur showcases how the theoretical principles from the Yerushalmi translate into a complex web of practical halakha.

a. The Overarching Principle: "אחר לשון בני אדם"

The Tur begins his discussion on various vows with the foundational statement: "אחר לשון בני אדם כיצד" (How does one follow the language of people?). This sets the stage for his entire approach. He then elaborates on countless examples, reiterating that the scope of a vow is dictated by what people commonly understand the term to mean in their specific locale and era.

b. Milk and Curd/Whey:

• Tur, Yoreh De'ah 217: "הנודר מהחלב אם קורין לקום על שם החלב אסור בו ואם לאו מותר בו פירוש קום מי חלב הנבדלין ממנו. נדר מן הקום מותר בחלב." (One who vows from milk, if they call kum by the name of milk, it is forbidden; if not, it is permitted. Kum means milk-waters separated from it. One who vows from kum is permitted milk.) The Tur's formulation here is nuanced. While seemingly aligning with the Sages against R. Yose (permitting kum by default), he adds a critical condition: "אם קורין לקום על שם החלב אסור בו." If, in a specific place, "קום" is commonly referred to by the name of milk (i.e., "milk's curd" or "milk-whey"), then R. Yose's reasoning ("שם אביו נקרא עליו") becomes operative. This demonstrates a sophisticated approach: the halakha generally follows the Sages, but the reasoning of R. Yose is valid and can be triggered by specific local linguistic customs. This is a significant chiddush compared to the Rambam, who seems to reject R. Yose's principle more absolutely in his codification.

c. Meat and its Derivatives:

• Tur, Yoreh De'ah 217: "הנודר מהבשר אסור בכל מיני בשר... מותר ברוטב פירוש במרק מהרוטב מותר בקיפה... מהבשר מותר בשניהם אם לא שאמר קונם בשר זה עלי או שאני טועם או שאני אוכל כדפרי' לעיל." (One who vows from meat is forbidden all kinds of meat... is permitted in broth, meaning in soup; from broth, he is permitted kifa... from meat, he is permitted both, unless he said 'Konam, this meat is forbidden to me,' or 'that I taste,' or 'that I eat,' as explained above.) The Tur explicitly permits broth (רוטב) and kifa (coagulated fibers) for a general vow on "meat," aligning with the Sages against R. Yehuda. However, he reiterates the crucial distinction: if the vow is specific ("this meat"), then even the derivatives are forbidden. He links this back to the broader principle of issurei hana'ah (prohibitions of benefit) for specific items.

d. "Shem Livai" and the Agent's Consultation (שליח נמלך עליו):

• Tur, Yoreh De'ah 217 (re: meat): "והרמב"ם כתב שבשר דגים אינו בכלל בשר סתם אלא במקום שהשליח נמלך עליו ובודאי כן הוא שהנדרים תלויין בלשון בני אדם לפי המקום." (And the Rambam wrote that fish meat is not included in "meat" unqualified, unless in a place where an agent would consult about it. And certainly, it is so, that vows depend on the language of people according to the place.) This introduces a practical test for lashon bnei adam: would an agent, sent to buy "meat," consider bringing fish? If the agent would "consult" (נמלך) with the sender because fish is not the standard referent for "meat," then "fish meat" is not included in a general vow on "meat." This heuristic, attributed to Rambam by the Tur, makes the abstract principle of lashon bnei adam concrete and verifiable through common commercial practice.

e. Expansion on "Shem Livai" and Local Customs:

The Tur provides a wealth of examples:

• Wine/Apple Wine, Oil/Sesame Oil, Honey/Date Honey: He directly codifies the Mishnah's rulings, affirming that "שם לווי" items are permitted.
• Vegetables/Field Vegetables: Similar to the Mishnah, only garden-grown vegetables are forbidden, not wild ones, unless the local custom considers both.
• Cooked Food (מבושל): He explores if "cooked" includes roasted (צלי) or boiled (שלוק), depending on local terminology.
• Spices (תבלין): Whether a vow on "spices" includes them raw or cooked.
• Fish (דג): Differentiates between "דג" (a fish) and "דגים" (fish), and whether small or large fish are included, again, "תלוי במה שרגילין לקרות גדול במקום ההוא" (depends on what is commonly called large in that place).

The Tur's chiddush is his meticulous, case-by-case application of the lashon bnei adam principle, demonstrating its flexibility and dependence on context. He integrates the various opinions from the Yerushalmi and Rishonim, highlighting how nuanced local customs can activate or nullify specific interpretations, especially bridging the gap between the Sages' general ruling and R. Yose's specific rationale. His work serves as a comprehensive guide for poskim to navigate the complexities of vow interpretation.

4. Shulchan Arukh (Yoreh De'ah 217:11) and Rema: Integrating R. Yose's Reasoning

The Shulchan Arukh, by Rabbi Yosef Karo, largely follows the Rambam in its structure and rulings, but the Rema (Rabbi Moshe Isserles) often adds the Ashkenazic minhag (custom) or differing opinions, particularly from the Tur. Their combined chiddush demonstrates the evolution of halakha from the Yerushalmi's disputes to a more harmonized, yet context-sensitive, practical application. Notably, the Rema introduces R. Yose's reasoning back into the practical halakha under specific linguistic conditions.

a. The Shulchan Arukh's Core Ruling (Following Rambam/Sages):

• Shulchan Arukh, Yoreh De'ah 217:11: "הנודר מן החלב, מותר במי חלב. ואם נדר ממי חלב, מותר בחלב." (One who vows from milk is permitted whey. And if he vowed from whey, he is permitted milk.) This ruling directly aligns with the Sages against R. Yose, and with the Rambam. It posits a clear distinction between "milk" and "whey" (מי חלב), treating them as sufficiently separate entities in common parlance such that a vow on one does not include the other.

b. The Rema's Gloss: Reintroducing R. Yose's Principle via Local Custom:

• Rema, Yoreh De'ah 217:11 (Gloss): "הגה: ויש אומרים דאם רגילין לקרות למי חלב צלולים בשם שחל בו שם חלב, דאסור בשניהם. וכן נהגו באשכנז כדברי הטור, דאם קורין לקום בשם חלב, אסור. וכן הוא בכל דבר." (Gloss: And some say that if it is customary to call clear whey by a name that includes the word "milk," then both are forbidden. And so is the custom in Ashkenaz according to the words of the Tur, that if they call kum by the name of milk, it is forbidden. And so it is in everything.) The Rema's gloss is a significant chiddush. While the Shulchan Arukh (following the Rambam) seems to have definitively ruled against R. Yose, the Rema, citing the Tur, reintroduces R. Yose's principle ("ששם אביו נקרא עליו"). He states that if, in a particular locale (e.g., Ashkenaz), the derivative (whey) is linguistically identified with its parent (milk) – for instance, if it's called "milk-whey" or "milk's curd" – then a vow on "milk" would forbid the whey.

This demonstrates a sophisticated synthesis: the general halakha may favor the Sages' lenient interpretation, but the underlying reasoning of R. Yose (that a name reflecting the parentage brings the derivative under the vow) remains valid and can be activated by local linguistic custom. The Rema concludes, "וכן הוא בכל דבר" (and so it is in everything), indicating that this principle applies broadly to all similar cases of primary items and their derivatives. This nuanced approach acknowledges both the general halakhic norm and the specific contextual factors that can alter its application.

c. Vows on Cheese and General Categories:

• Shulchan Arukh, Yoreh De'ah 217:11: "הנודר מן הגבינה, מותר בחלב, ואסור בה בין לחה בין יבשה, טפלה ומלוחה." (One who vows from cheese is permitted milk, and is forbidden cheese whether moist or dry, unsalted or salted.) This reiterates Abba Shaul's ruling, as codified by the Rambam and Tur, emphasizing that a vow on a category like "cheese" is comprehensive and applies to all its forms. The distinction between milk and cheese remains clear, as a vow on one does not affect the other.

The Shulchan Arukh and Rema, together, illustrate the culmination of the halakhic process. They provide a clear framework, rooted in the Yerushalmi's discussions, but refined by centuries of poskim. The chiddush of the Rema, in particular, is to integrate R. Yose's reasoning as a viable, context-dependent principle, ensuring that the halakha of nedarim remains deeply sensitive to the ever-evolving nature of lashon bnei adam across different communities and eras. This establishes a meta-halakhic heuristic: while a majority opinion might establish a default ruling, the underlying rationales of dissenting opinions can become operative under specific, locally defined circumstances.

Friction

The sugya presents several points of intellectual friction, demanding rigorous analysis to reconcile apparent contradictions or to understand the Yerushalmi's distinctive narrative flow. Two prominent kushyot (challenges) stand out: the categorization of vows concerning bitul b'ta'am (nullification by taste) and the extensive, seemingly unrelated digression into calendar intercalation.

1. Kushya: The Contradictory Categorization of Vows for Bitul b'Ta'am

The Yerushalmi presents a fundamental kushya regarding the nature of vows: are they "דבר שיש לו מתירין" (something that can become permitted) or "דבר שאין לו מתירין" (something that cannot become permitted)? This distinction is critical for the laws of bitul b'ta'am in mixtures, where the former allows nullification if the forbidden item loses its taste, while the latter (like orlah or kilayim) may forbid even a minute amount. The sugya presents conflicting evidence from Mishnayot.

Textual Snapshot (Nedarim 6:4:2:1):

"זה הכלל דרש ר' שמעון משום ר' יהושע: כל דבר שיש לו מתירין לא קבעו לו חכמים שיעור... וכל דבר שאין לו מתירין קבעו לו חכמים שיעור..." Translation: "This is the rule Rebbi Simeon declared in the name of Rebbi Joshua: For everything that may become permitted through some action... the Sages did not fix any limits... But for everything that cannot become permitted through any action... the Sages did fix as limit..."

"נדרים מה את עביד להון? כדברים שיש להן מתירין, או כדברים שאין להן מתירין? מסתברא כדברים שיש להן מתירין, דתנינן תמן: 'שהזקן עוקר את הנדר מן השורש.' אמרין: אינו עוקר אלא מכאן ולהבא." Translation: "How do you treat vows? As referring to things that can become permitted or to things that cannot become permitted? It seems reasonable that we treat them as referring to things that can become permitted, as we have stated there: 'for the Elder uproots the vow from the start.' They said, he only uproots for the future."

"ודאי משנה כדברים שאין להן מתירין, דתנינן תמן: 'גידולי תרומה תרומה... וגידולי טבל... חולין...'" Translation: "Certainly a Mishnah treats it as referring to something that cannot become permitted, as we have stated there: 'The growth from heave is heave... But the growths from ṭevel... are profane...'"

"ועוד משנה כדברים שיש להן מתירין דתנינן תמן: 'הנודר מדבר והוא מיתערב עם דבר אחר אם יש בו טעם אסור.'" Translation: "But another Mishnah treats it as something that can become permitted, as we have stated there: 'For if somebody vowed not to have a certain thing and it became mixed with something else, if it can be tasted it is forbidden.'"

The Kushya: The Yerushalmi first suggests that vows are davar she'yesh lo matirin because hatarat nedarim (annulment of vows) by a chacham can "uproot the vow from the start" (עוקר את הנדר מן השורש). However, this is immediately challenged by the assertion that annulment is only "מכאן ולהבא" (from now and onwards), not retroactively. This would imply vows are davar she'ein lo matirin. The sugya then brings a Mishnah about gidulei terumah (growth of heave-offering) implying vows are davar she'ein lo matirin (as gidulei terumah are also terumah, indicating a strict, non-nullifiable prohibition). Yet, it concludes by bringing another Mishnah about vows in mixtures, where bitul b'ta'am applies ("אם יש בו טעם אסור"), which is the hallmark of davar she'yesh lo matirin. The sugya seems to present a direct contradiction, leaving the categorization of vows ambiguous.

Terutz 1: Distinguishing between Issur Gavra and Issur Cheftza

One approach to resolving this tension is to differentiate between the issur gavra (prohibition on the person) and the issur cheftza (prohibition on the object).

• Issur Gavra: A vow primarily creates a personal obligation and prohibition for the individual who vowed. When a chacham performs hatarat nedarim, he removes this personal obligation. The phrase "עוקר את הנדר מן השורש" could refer to the root of the personal obligation, meaning the person is no longer considered to have been bound by the vow at all for their future actions, and perhaps even for past actions that were done before the annulment but after the vow, they are retroactively absolved of sin. This is the essence of hatara. However, the counter-argument "אינו עוקר אלא מכאן ולהבא" suggests that while the personal obligation might be removed retroactively, the status of the item itself as forbidden by the vow might not be retroactively lifted in all respects.
• Issur Cheftza (for mixtures): When a vowed item becomes mixed with permitted food, the sugya is concerned with the status of the mixture, which depends on the issur cheftza of the forbidden component. If the item had a permanent issur cheftza (like orlah), then even if the person could somehow be absolved of personal sin for eating it, the cheftza itself would still render the mixture forbidden in its entirety or at a strict ratio.
  • The Mishnah comparing vows to gidulei terumah (which are terumah) suggests that, for the purpose of issur cheftza, a vowed item is treated strictly, like davar she'ein lo matirin. The "growth" of a vow would remain forbidden.
  • However, the Mishnah that says "אם יש בו טעם אסור" (if it can be tasted it is forbidden) indicates bitul b'ta'am applies. This is characteristic of davar she'yesh lo matirin.

Reconciliation: We can suggest that hatarat nedarim makes the gavra permitted retroactively, effectively turning any past consumption into a non-sin. However, the cheftza itself, once forbidden by vow, is treated as davar she'ein lo matirin for min b'mino (kind with its own kind) mixtures, where even a minute amount might forbid, or for gidulei gidulim (growth of growth). Yet, for min b'she'eino mino (kind with a different kind) mixtures, the Sages apply bitul b'ta'am, which is the rule for davar she'yesh lo matirin. This implies a hybrid status or a nuanced application of the rules. The rule of R. Shimon in R. Yehoshua's name itself differentiates: "a kind with its own is forbidden in the minutest amount," while "a kind with a different kind if it can be tasted." This suggests that vows are fundamentally davar she'yesh lo matirin for bitul b'ta'am (hence the taste criterion), but they might carry some stricter implications (like gidulei terumah) in specific contexts or when the annulment is not me'ikara (from the root) in all senses.

The Yerushalmi’s struggle itself highlights the ambiguity inherent in vows. Unlike terumah or orlah, which are inherent to the object, a neder is a human imposition. Its annulment is also a human act, making its retroactive scope complex. The sugya grapples with whether the human annulment truly erases the past reality of the prohibition on the cheftza.

Terutz 2: Contextual Application of Bitul Rules

Another terutz could focus on the specific contexts and types of prohibitions. The rule cited by R. Shimon in the name of R. Yehoshua is a general principle.

• For davar she'ein lo matirin like orlah, the prohibition is inherent and permanent, hence even a minute amount can forbid min b'mino.
• For davar she'yesh lo matirin like tevel, the prohibition is temporary, and once rectified, it ceases. The Yerushalmi then applies this to nedarim. The initial inclination "מסתברא כדברים שיש להן מתירין" is because hatarat nedarim is indeed a "matir" (permitter). The kushya "אינו עוקר אלא מכאן ולהבא" indicates that this matir is not retroactive in the sense of completely nullifying the cheftza's forbidden status ex post facto for all purposes. However, it still is a matir. Therefore, for bitul b'ta'am, where the concern is whether the forbidden taste remains, the standard rule for davar she'yesh lo matirin applies: if the taste is gone, it's permitted.
• The kushya from gidulei terumah might be a specific stringency. Vows, while they can be annulled, are still a serious prohibition. Perhaps for gidulei gidulim, which represent a very indirect connection, Chazal treated them more stringently, akin to davar she'ein lo matirin, to discourage vows or to emphasize their gravity. This would be a gezeira (rabbinic decree) specific to gidulim from vowed items, rather than a universal categorization for all bitul contexts.
• The concluding Mishnah ("אם יש בו טעם אסור") would then represent the general rule for bitul b'ta'am for vows in min b'she'eino mino mixtures. The specific cases of gidulim or the theoretical retroactive annulment might be exceptions or distinct facets of the neder status, not negating its fundamental character as davar she'yesh lo matirin for typical admixture scenarios.

This interpretation suggests that while nedarim are fundamentally davar she'yesh lo matirin due to the possibility of annulment, their stringency can be elevated in certain contexts (like gidulim) or their retroactivity limited, making their halakhic character multifaceted rather than monolithic.

2. Kushya: The Extensive Calendar Intercalation Digression

A significant portion of the Yerushalmi sugya (from Nedarim 6:8:15 to 8:1) diverges into a lengthy discussion about the rules and authority for intercalating the calendar (עיבור שנה), the story of King Hezekiah, and the dispute regarding Hananiah the nephew of R. Yehoshua. This digression is jarringly out of place in a masekhet focused on vows.

Textual Snapshot (Nedarim 6:8:15 and onwards):

"הנודר מן הירקות בשביעית אסור אף בירקות שדה." ר' כריספא אמר טעמא דר' חנינה בר גמליאל: "מכאן ואילך שרבי התיר להביא ירקות לתוך הארץ שאין בין שביעית לשאר שני שבועית כלום." Translation: "He who makes a vow to abstain from vegetables in the Sabbatical is also forbidden field vegetables." Rebbi Crispus stated the reason in the name of Rebbi Ḥanina ben Gamliel: "That means, as long as Rebbi did not permit to import vegetables into the Land. But since Rebbi permitted to import into the Land there is no difference between the Sabbatical and the remaining years of the Sabbatical cycle."

[Immediately following, the text shifts to rules of intercalation:] "אין מעברין את השנה לא בשביעית ולא במוצאי שביעית, ואם עיברו הרי היא מעוברת." Translation: "One intercalates for a year neither in a Sabbatical nor in the year after the Sabbatical; but if they intercalated it is intercalated." (Nedarim 6:8:15)

The Kushya: The transition from discussing vows on vegetables in the Sabbatical year to the intricate rules of calendar intercalation is abrupt and seemingly unconnected. Why would the Yerushalmi insert such a lengthy and complex discussion, complete with historical anecdotes and biblical exegesis, into a tractate on vows? This is a notorious characteristic of the Yerushalmi, but a chevruta-level analysis seeks to uncover any possible thematic or conceptual link.

Terutz 1: The Authority of the Sages to Define Reality (Meta-Halakhic Link)

The most compelling explanation for this digression lies in a meta-halakhic theme: the authority of Chazal (the Sages) to define and establish reality within the framework of Jewish law.

• In Nedarim: The core sugya on vows revolves around the Sages' authority to interpret lashon bnei adam (common language) and to determine what falls under a vow. This involves drawing lines, defining categories (e.g., what constitutes "milk" or "wine"), and even annulling vows. The machloket between R. Yose and the Sages, or R. Yehuda ben Bathyra and the Sages, fundamentally concerns how the Sages establish the scope of a personal prohibition based on communal understanding.
• In Calendar Intercalation: The act of עיבור שנה (intercalating the year) is a profound exercise of Rabbinic authority. The Beis Din HaGadol (Great Court) has the power to add a month, thereby shifting the dates of all chagim (holidays) and agricultural cycles. The Mishnah in Rosh Hashanah 25a states, "על פי עדים אנו מעברין את השנה" (Based on witnesses, we intercalate the year), but the Gemara explains that even without witnesses, the Beis Din has the power to declare the new month. The story of Hananiah's attempt to intercalate the calendar in the Diaspora and the strong response from the Land of Israel ("The kid goats you left behind became rams... if you do not accept, go to the thistle desert, do slaughter and let Onias sprinkle" - Nedarim 8:1) powerfully underscores that this authority is centralized and exclusive to the Beis Din in Eretz Yisrael.
• Thematic Convergence: Both nedarim and kiddush hachodesh/iybur shana involve the Sages' power to establish halakhic reality. In nedarim, they define the parameters of personal prohibitions. In calendar matters, they define time itself, which impacts all mitzvot that are time-bound. The connection is thus not on the content of the laws, but on the source and nature of rabbinic authority in shaping halakha and defining the world for the Jewish people. The discussion on shevi'it and importing vegetables also highlights this: R. Yehuda HaNasi's takanah (decree) to allow importation significantly impacted the application of shevi'it laws, another instance of rabbinic authority shaping practical halakha.

Terutz 2: Practical Connections to Agricultural Laws

While the meta-halakhic link is strong, there's also a more direct, albeit still tangential, practical connection to agricultural laws.

• The immediate trigger for the digression is the discussion about "ירקות בשביעית" (vegetables in the Sabbatical year). The permissibility of "ירקות שדה" (field vegetables) and the takanah of R. Yehuda HaNasi regarding importing vegetables (Nedarim 6:8:15) directly relate to shevi'it laws.
• Shevi'it laws, in turn, are intimately tied to the calendar. The start and end of the Sabbatical year, and thus the permissibility of certain agricultural activities or produce, depend on the accurate determination of the lunar-solar calendar, which is governed by intercalation.
• The discussion mentions "the ‘Omer ceremony" (Nedarim 6:8:15), which marks the start of chadash (new grain) consumption and is fixed to the 16th of Nisan, a date dependent on the proper intercalation of Adar. The reference to King Hezekiah's Passover celebration in the second month (II Chronicles 30) directly addresses an instance of calendar adjustment due to impurity, highlighting the practical implications of intercalation for holiday observance.
• Even the example of the girl's age for capital punishment (Nedarim 8:1) ties into the calendar, as her age of "three years and one day" is precise and dependent on accurate month and year counts.

Thus, the digression, while lengthy, is not entirely arbitrary. It moves from a specific neder case involving shevi'it produce to the underlying calendrical system that governs shevi'it and many other agricultural and festival mitzvot. The Yerushalmi, known for its associative leaps, uses the shevi'it context to transition to a broader, but related, discussion on the critical role of calendar determination in halakha. The fact that many paragraphs are explicitly cited from other tractates (as noted in Sefaria) confirms this is a compilation of related material, rather than a seamless narrative flow.

Intertext

The sugya in Yerushalmi Nedarim 6:4:2-8:1, particularly its main theme of vow interpretation and its lengthy digression on calendar intercalation, resonates with several key texts across Jewish literature. These intertextual connections illuminate the broader halakhic principles and historical contexts at play.

1. Tanakh: Hezekiah's Actions and Rabbinic Authority

The Yerushalmi's detailed recounting of King Hezekiah's six actions, three of which were approved by Chazal and three disapproved, offers a profound intertextual link to the biblical narrative and the subsequent development of rabbinic authority.

Textual Snapshot (Yerushalmi Nedarim 6:8:15 and onwards, citing from Tosefta Sanhedrin):

"ששה דברים עשה חזקיה המלך. על שלשה הודו לו ועל שלשה לא הודו לו. גרר עצמות אביו והודו לו. שיבר נחש הנחושת והודו לו. גנז ספר רפואות והודו לו. סתם מי גיחון העליון ולא הודו לו. קיצץ דלתות ההיכל ולא הודו לו. עבר ניסן בניסן ולא הודו לו." Translation: "Six things did Ezekiah, the king of Judea, do. With three they agreed, with three they did not agree. He dragged his father’s bones and they agreed. He smashed the bronze snake and they agreed. He hid the table of medicines and they agreed. With three they disagreed. He closed the upper Giḥon spring and they disagreed. He cut down the Temple doors and they disagreed. He intercalated Nisan in Nisan and they disagreed." (Nedarim 6:8:15)

• Biblical Context (II Kings 18, II Chronicles 29-32): The actions of Hezekiah are primarily chronicled in Melakhim Bet and Divrei HaYamim Bet.

  • Dragging Ahaz's bones: II Chronicles 28:27 notes Ahaz was not buried in the royal tombs, seen by Chazal as Hezekiah's act of atonement.
  • Smashed Nehushtan: II Kings 18:4 explicitly states Hezekiah "broke the bronze serpent that Moses had made, for until those days the Israelites had been burning incense to it; he called it Nehushtan." This was an act of iconoclasm, praised by Chazal.
  • Hiding the Book of Remedies: This is not explicitly in Tanakh but is a rabbinic tradition (Maimonides, Peirush haMishnayot, Pesachim 4:9, views it as a book of magical remedies, which could lead people away from reliance on God).
  • Closing Gihon: II Chronicles 32:30 states, "Hezekiah himself stopped up the upper outlet of the waters of Gihon, and directed them down to the west side of the city of David." This was a strategic move against Sennacherib (II Kings 20:20), but Chazal disapproved due to potential violation of Bal Tashchit (not destroying useful resources) or lack of trust in God.
  • Cutting Temple Doors: II Kings 18:16 mentions Hezekiah stripped the gold from the Temple doors and pillars to pay tribute to Sennacherib. Chazal disapproved of this desecration.
  • Intercalating Nisan in Nisan: II Chronicles 30:2-3 describes Hezekiah celebrating Passover in the second month (Iyar) because "the priests had not sanctified themselves in sufficient numbers, nor had the people assembled in Jerusalem." The Yerushalmi's interpretation of "intercalating Nisan in Nisan" (i.e., retroactively declaring Nisan to be a second Adar to allow for a later Passover) is a rabbinic understanding, and Chazal's disapproval underscores the strictness of calendar rules and the limited scope of even a king's authority in such matters.

• Intertextual Significance: This passage highlights the rabbinic method of interpreting and evaluating historical figures through a legal and moral lens. It demonstrates that even biblical kings are subject to rabbinic scrutiny and that Chazal's authority, particularly in matters like calendar determination, is paramount, even superseding royal prerogative. This reinforces the theme of rabbinic authority that underpins both the Nedarim sugya (interpreting vows) and the intercalation digression.

2. Shulchan Arukh, Yoreh De'ah 217: The Codified "Lashon Bnei Adam"

The principles elucidated in the Yerushalmi regarding lashon bnei adam (common linguistic usage) as the determinant for vows are fully codified in the Shulchan Arukh, Yoreh De'ah Chapter 217. This serves as a direct halakhic continuation and application of the Yerushalmi's discussions.

Textual Snapshot (Shulchan Arukh, Yoreh De'ah 217:11):

"הנודר מן החלב, מותר במי חלב. ואם נדר ממי חלב, מותר בחלב. הגה: ויש אומרים דאם רגילין לקרות למי חלב צלולים בשם שחל בו שם חלב, דאסור בשניהם... הנודר מן הגבינה, מותר בחלב, ואסור בה בין לחה בין יבשה, טפלה ומלוחה." Translation: "One who vows from milk is permitted whey. And if he vowed from whey, he is permitted milk. Gloss: And some say that if it is customary to call clear whey by a name that includes the word 'milk,' then both are forbidden... One who vows from cheese is permitted milk, and is forbidden cheese whether moist or dry, unsalted or salted."

• Yerushalmi Connection: This passage directly reflects the opening Mishnah and Halakhah of Yerushalmi Nedarim 6:4. The Shulchan Arukh's primary ruling ("מותר במי חלב") aligns with the Sages against R. Yose. The Rema's gloss, however, directly reintroduces R. Yose's reasoning ("ששם אביו נקרא עליו") by making its application contingent on local linguistic custom ("אם רגילין לקרות... בשם שחל בו שם חלב"). This demonstrates the enduring impact of the Yerushalmi's debate and the nuanced way poskim integrate differing opinions based on contextual factors.
• Intertextual Significance: This highlights the practical outcome of the Yerushalmi's abstract discussions. The Shulchan Arukh and Rema serve as the authoritative psak (ruling) for halakha l'ma'aseh (practical law), showing how the principles of lashon bnei adam, the distinction between primary items and derivatives, and the role of specific vs. general vows, are applied in Jewish life. The Tur (Yoreh De'ah 217), which the Rema explicitly cites, further elaborates on numerous cases, providing a comprehensive framework for interpreting vows based on local and temporal linguistic norms, directly building upon the Yerushalmi's foundations.

3. Mishneh Torah, Hilkhot Ma'achalot Asurot: Principles of Bitul

The discussion in Yerushalmi Nedarim 6:4:2:1 about whether vows are davar she'yesh lo matirin or davar she'ein lo matirin for the purpose of bitul b'ta'am (nullification by taste) has a profound intertextual parallel in the Rambam's codification of forbidden mixtures.

Textual Snapshot (Yerushalmi Nedarim 6:4:2:1):

"כל דבר שיש לו מתירין לא קבעו לו חכמים שיעור... וכל דבר שאין לו מתירין קבעו לו חכמים שיעור... נדרים מה את עביד להון?... הנודר מדבר והוא מיתערב עם דבר אחר אם יש בו טעם אסור." Translation: "For everything that may become permitted through some action... the Sages did not fix any limits... But for everything that cannot become permitted through any action... the Sages did fix as limit... How do you treat vows?... For if somebody vowed not to have a certain thing and it became mixed with something else, if it can be tasted it is forbidden."

• Rambam, Mishneh Torah, Hilkhot Ma'achalot Asurot 15:1-3, 15:19: The Rambam systematically defines these categories.

  • Davar She'ein Lo Matirin: "כל איסורין שבתורה שאין להן היתר עולמית, כגון חלב ודם ובשר בחלב... אם נתערבו במין מינן, אפילו באלף מותר, ואם נתערבו במין אחר, בטל בשישים." (All prohibitions in the Torah that have no permission forever, such as forbidden fat, blood, and meat with milk... if they become mixed with their own kind, even in a thousand it is permitted, and if they become mixed with a different kind, it is nullified in sixty.) (Hilkhot Ma'achalot Asurot 15:1) Note: The Rambam's ruling for min b'mino is different from the Yerushalmi here; he says "בטל באלף" for issurei hana'ah which is stricter, but for taste it becomes nullified. However, the core distinction of davar she'ein lo matirin is that the prohibition is permanent.
  • Davar She'yesh Lo Matirin: "כל דבר שיש לו מתירין, כגון טבל ומעשר שני... אם נתערב במין מינו, אפילו באלף אינו בטל, עד שיהיה כשיעור שיודע שהוא מתערב בו." (Any item that has a means of becoming permitted, such as tevel and Second Tithe... if it is mixed with its own kind, even in a thousand it is not nullified, until it is in such a measure that it is known to be mixed in it.) (Hilkhot Ma'achalot Asurot 15:19) The Rambam (15:3) clarifies that for davar she'yesh lo matirin, min b'mino is not nullified even in 1000 parts if it is recognizable. If it's min b'she'eino mino, it's nullified by taste. The Yerushalmi's final Mishnah in Nedarim applies the "taste" criterion to vows, suggesting they fall under davar she'yesh lo matirin in this context.

• Intertextual Significance: This connection underscores that the Yerushalmi's internal kushya regarding the categorization of vows is not merely an academic exercise but touches upon fundamental principles of kashrut and mixtures. The way nedarim are categorized impacts their bitul rules, showing how a personal prohibition (a vow) interacts with the objective laws of forbidden foods. The fact that the Yerushalmi ultimately points to bitul b'ta'am for vows suggests that, despite their stringency, they are generally considered rectifiable (through annulment) for mixture purposes, thus falling under the "davar she'yesh lo matirin" framework for min b'she'eino mino.

4. Responsa Literature: Modern Applications of "Lashon Bnei Adam"

The principle of lashon bnei adam is a living and dynamic one, constantly re-evaluated in contemporary halakha. Responsa literature frequently addresses how vows apply to new technologies, food products, and evolving linguistic norms.

• Example: Plant-based meat substitutes: A common modern she'eilah (question) is whether a person who vowed not to eat "meat" (בשר) would be forbidden from consuming plant-based meat substitutes (e.g., Impossible Burger, Beyond Meat).

  • Application of Yerushalmi Principle: Poskim would invoke the Yerushalmi's principle of lashon bnei adam (Nedarim 6:9:1:1, "שם לווי") and the Tur's expansion on rechovon shel ir (Yoreh De'ah 217). The question would be: In contemporary society, does the term "meat" in common parlance (even among non-vegetarians) include these plant-based alternatives? Or are they considered "שם לווי" (e.g., "plant-based meat") that distinguishes them as a separate category?
  • Discussion Points:
    • Appearance and Taste: These products are often designed to mimic the appearance, texture, and taste of meat. Does this imitation make them "meat" in common understanding?
    • Ingredients: They are clearly not animal flesh. This distinguishes them chemically.
    • Marketing: They are marketed as "meat alternatives" or "plant-based meat," suggesting they are not meat, but like meat.
    • Intent of the Vower: What did the vower intend? Did they mean to avoid animal products, or merely the taste/experience of meat?
  • Likely Psak: Most poskim would likely rule leniently, permitting plant-based "meat" for one who vowed from "meat." The term "meat" in common parlance primarily refers to animal flesh. "Plant-based meat" has a shem livai that explicitly differentiates it. An agent sent to buy "meat" would not bring a plant-based substitute without explicit consultation, echoing the Tur's shaliach nimlach alav heuristic. However, if the vower specified "meat taste" or "anything resembling meat," the halakha might be stricter.

• Intertextual Significance: This illustrates the enduring vitality of the Yerushalmi's principles. The ancient debates over "milk" vs. "curd" and "wine" vs. "apple wine" directly inform contemporary halakhic reasoning. The sugya provides the analytical tools to navigate a constantly evolving linguistic and culinary landscape, ensuring that vows, though personal, remain anchored in a communal understanding of language and reality.

Psak/Practice

The sugya in Yerushalmi Nedarim 6:4:2-8:1, despite its occasional meandering, establishes several foundational principles for the halakha of vows and provides insights into meta-psak heuristics.

1. The Primacy of Lashon Bnei Adam (Common Linguistic Usage)

The most significant and enduring psak derived from this sugya is that vows are interpreted according to the common linguistic usage (lashon bnei adam) prevalent in the specific place and time (l'fi hamakom v'hazman). This principle is explicitly stated (Nedarim 6:9:1:1, "שם לווי") and forms the bedrock of all halakhic interpretations of nedarim in the Rishonim (e.g., Rambam, Hilkhot Nedarim 9:8; Tur, Yoreh De'ah 217) and Acharonim (e.g., Shulchan Arukh, Yoreh De'ah 217).

• Heuristic: When assessing a vow, one must ask: "What would the average person in this community, at this time, understand by this term?" This means that the meaning of a vow can change over generations or vary geographically. For instance, "oil" in Babylonia might have meant sesame oil, while in Israel, it meant olive oil (Babli Nedarim 53a, cited in Sefaria footnote 80). Similarly, a vow from "honey" today would mean bee honey, not date honey, even though dates are called "honey" in the Torah (Devarim 8:8), because "דבש סתם אינו אלא דבש דבורים" (Tur, Yoreh De'ah 217).

2. General vs. Specific Vows: The Issur Gavra vs. Issur Cheftza Distinction

A crucial distinction is made between a general vow (e.g., "meat") and a specific vow (e.g., "this meat").

• General Vow (Issur Gavra): When one vows from a category of food, the prohibition applies to the person (issur gavra). Derivatives or items requiring a "שם לווי" (accompanying name) are generally permitted, as common parlance distinguishes them. This is the ruling of the Sages (מתירין) for milk/curd, meat/broth, grapes/wine.
• Specific Vow (Issur Cheftza): If one vows from a specific item ("קונם בשר זה עלי" - Nedarim 6:5:1:1), the item itself becomes forbidden for any benefit (issurei hana'ah), much like notar or pigul. In such a case, all derivatives and even any taste from that specific item are forbidden (Nedarim 6:6:1:1). This indicates a transformation of the object's status (issur cheftza), leading to much stricter halakha.

3. The Nuance of R. Yose's Reasoning and the Rema

While the psak generally follows the Sages against R. Yose, the Rema (Yoreh De'ah 217:11) introduces a critical nuance: if local custom does use a name for the derivative that explicitly links it to its parent (e.g., "קדמא דחלבא" – milk's curd), then R. Yose's reasoning ("ששם אביו נקרא עליו") becomes operative, and both the parent and derivative are forbidden.

• Heuristic: This shows that even if a dissenting opinion is not adopted as the universal psak, its underlying logic can be invoked by specific local customs. It's a testament to the flexibility of halakha and its sensitivity to communal practice.

4. Vows and Bitul b'Ta'am (Nullification by Taste)

The sugya's struggle to categorize vows as "דבר שיש לו מתירין" or "דבר שאין לו מתירין" for mixtures ultimately concludes that bitul b'ta'am applies to vows in mixtures of min b'she'eino mino (different kinds), implying they are treated as davar she'yesh lo matirin in this context (Nedarim 6:4:2:1, "אם יש בו טעם אסור").

• Heuristic: This means that if a vowed item is mixed with a non-vowed item of a different kind, and its taste is no longer discernible, the mixture is permitted. This is a lenient ruling, reflecting that vows, unlike inherent prohibitions like orlah, can be annulled.

5. The Authority of Chazal in Defining Reality

The extensive digression on calendar intercalation, while seemingly out of place, underscores a profound meta-halakhic principle: the ultimate authority of Chazal (the Sages) to define and establish reality within Jewish law. Just as they interpret the scope of vows based on linguistic conventions, they also determine the very framework of time through calendar intercalation. This authority, centralized in Eretz Yisrael, is critical for the functioning of all time-bound mitzvot and the unity of the Jewish people.

• Heuristic: This reinforces the idea that halakha is not merely a static interpretation of texts, but a dynamic system shaped by the authoritative pronouncements and interpretations of the Sages, which can redefine categories, terms, and even the flow of time itself.

In sum, the sugya provides practical guidance for interpreting vows based on lashon bnei adam and the distinction between general and specific prohibitions, while also offering a profound glimpse into the fundamental authority of Chazal in shaping halakhic reality.

Takeaway

The Yerushalmi in Nedarim illuminates that the scope of a vow is profoundly shaped by the evolving tapestry of common linguistic usage and local custom, yet this interpretation is always framed and ultimately defined by the authoritative pronouncements of Chazal.