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Nedarim 61

StandardExpert – Beit Midrash AnalysisDecember 27, 2025

Nedarim 61: The Elasticity of Time in Vows

Sugya Map

  • Issue: Determining the duration of a vow tied to a temporal marker, specifically "this year" (השנה) versus "a year" (שנה), and the implications of leap years (עיבור) and cyclical time periods like the Jubilee (יובל). Further, the precise endpoint of vows tied to fixed (מועד קבוע) and unfixed (מועד שאינו קבוע) temporal events.
  • Nafka Mina(s):
    • The exact duration of a vow, impacting what is permissible to the vow-taker.
    • Understanding the nature of calendrical calculations in Jewish law, particularly concerning the Jubilee and Sabbatical cycles.
    • The interpretive principles applied to temporal language in vows, distinguishing between precise and approximate timeframes.
    • The distinction between a fixed point in time (e.g., Passover) and a period (e.g., summer), and how "until" functions in each case.
  • Primary Sources:
    • Mishnah Nedarim 61a-b
    • Gemara Nedarim 61a-b
    • Baraitot cited in the Gemara
    • Leviticus 25

Text Snapshot

Nedarim 61a:

אילימא כדקתני "השנה" למה לי למימר? פשיטא דהשנה עד ראש השנה משמע, ואפילו עיבורה נמי כלול בה. אלא לאו משום דקאמר "שנה" והשתא הבעיא היא, דאינו אסור אלא בשנה אחת, ואף על גב דאיכא עיבור, לא מתאסר אלא י"ב חדש כרוב שנים. קמ"ל דאף על גב דאיכא עיבור, י"ב חדש כולל עיבורה, וכן הלכה ביום כהיום.

  • Nuance: The phrase "אילימא כדקתני" (If we say as it teaches) introduces a potential interpretation of the Mishnah's statement. The Gemara questions the necessity of stating the obvious – that "this year" encompasses the entire year, including any intercalated month. The subsequent "אלא לאו" (Rather, is it not) pivots to an alternative interpretation, suggesting the Mishnah is addressing a case where the vow was for "a year" (שנה) rather than "this year" (השנה). The critical distinction hinges on whether the vow automatically includes the leap month or defaults to a standard twelve months. "קמ"ל" (It teaches us) signifies the Gemara's resolution of this doubt.

Nedarim 61b:

עד שיבא הקיץ. עד שיביאו את הפירות בסלים. עד שיעבור הקיץ. עד שיניחו את המקטפות.

  • Nuance: This section of the Mishnah defines the endpoints of vows related to "summer" (קיץ). The phrases "עד שיביאו את הפירות בסלים" (until they bring the fruits in baskets) and "עד שיניחו את המקטפות" (until they put aside the knives) are specific markers. The latter, "המקטפות," is a technical term likely referring to tools used in harvesting, perhaps figs, as the Gemara elaborates. This precision in defining temporal boundaries highlights the Gemara's meticulous approach to halakhic interpretation.

Readings

Ran on Nedarim 61a:1:1 (Hebrew/Aramaic - translate):

שבט פשיטא דהשנה עד ראש השנה משמע:

Translation: "It is obvious that 'this year' means until Rosh Hashanah."

The Ran, in his commentary on the Rif, grapples with the initial Gemara passage. He notes that the phrase "השנה" (this year) in a vow naturally implies the entirety of the current calendar year, extending up to Rosh Hashanah of the following year. This includes any intercalated month (עיבור) that might be added to extend the year. The Gemara's apparent need to clarify this is what prompts the deeper analysis. The Ran sees the initial statement as so self-evident that he questions why it needs explicit mention. This leads him to the Gemara's subsequent line of reasoning: that the Mishnah is not dealing with a simple "this year" vow, but rather with the more ambiguous "a year" (שנה), where the status of a leap month might be uncertain.

Ran on Ran on Nedarim 61a:1:2 (Hebrew/Aramaic - translate):

ושמע מינה שנה כהשנה - דאי דיניה כשנה אחת לא מתסר בעבורה אלא בשנים עשר חדש כרוב שנים:

Translation: "And learn from it that 'a year' is like 'this year' – for if its status were one year [standard], it would not be forbidden because of [the leap month], but rather for twelve months, like most years."

Here, the Ran explains the implication of the Gemara's resolution. If the initial statement is indeed about a vow of "a year" (שנה), and the Gemara clarifies that it is equivalent to "this year" (השנה) in its duration, it means that the vow encompasses the entire year, including any leap month. The Ran's commentary highlights a crucial point: the default understanding of "a year" might have been twelve months. The Gemara's teaching here is that even when the vow is for a generic "year," it is extended to include the full duration of the current year, even if that year is longer due to intercalation. This implies a principle that a vow tied to a temporal unit generally extends to the full duration of that unit as it unfolds in reality, not its theoretical shortest form.

Rashi on Rashi on Nedarim 61a:1:1 (Hebrew/Aramaic - translate):

אילימא כדקתני - דאמר השנה למה לי למימר פשיטא כיון דאמר השנה משמע השנה זו קאמר ועיבורה נמי בכלל הוי:

Translation: "If you say, as it teaches – that he said 'this year', why is it necessary to say? It is obvious, since he said 'this year,' it means this current year, and its leap month is also included."

Rashi, in his commentary on the Rif (which the Ran is commenting on), echoes the initial Gemara's sentiment of apparent redundancy. He argues that the statement "this year" (השנה) is inherently clear. It refers to the current year, and this naturally includes any added month (עיבור). Therefore, Rashi questions the need for the Mishnah to explicitly state this. This leads Rashi to also accept the Gemara's subsequent reinterpretation: that the Mishnah is clarifying the duration of a vow for "a year" (שנה), making it equivalent to "this year" (השנה) in scope, thus including the leap month.

Steinsaltz on Steinsaltz on Nedarim 61a:1 (Hebrew/Aramaic - translate):

אילימא כדקתני [אם תאמר בדיוק כמו ששנה] — למה לי למימרא [לומר] דבר זה? הרי ברור ש"השנה" היא כל אותה שנה, כמה שתהיה. אלא לאו [האם לא] שלא אמר "השנה", אלא ש אמר "שנה", והשמיענו בברייתא כי נאסר כל אותה שנה. אלמא [מכאן] יוצא ש "שנה" כ"השנה" דמי [נחשב], ו אם כן "יום" נמי [גם כן] כ"היום" דיניה [דינו].

Translation: "If you say, [it means] exactly as it teaches – why is it necessary to state this? It is obvious that 'this year' is that entire year, whatever it may be. Rather, is it not that he did not say 'this year,' but rather said 'a year,' and [the Mishnah] taught us in a baraita that it is forbidden for that entire year. From here it emerges that 'a year' is equivalent to 'this year,' and if so, 'a day' is also like 'today'."

Rabbi Steinsaltz's commentary offers a clear explication of the Gemara's logical progression. He highlights the apparent redundancy of teaching that "this year" means the entire year, including leap months. He then explains the Gemara's proposed resolution: the Mishnah is addressing a vow of "a year" (שנה), not "this year" (השנה). The Gemara clarifies that even a generic "year" vow includes the full, potentially extended, duration of the current year. The crucial insight drawn from this is the equivalence of "a year" to "this year" in this context, leading to the corollary that "a day" (יום) is equivalent to "today" (היום). This establishes a principle of temporal inclusiveness for vows.

Rashash on Rashash on Nedarim 61a:1 (Hebrew/Aramaic - translate):

ר"ן ד"ה וש"מ שנה. דאי דיניה כשנה אחת לא מיתסר בעבורה. לכאורה סותר א"ע למש"כ לקמן (סג) בסוף המשנה ואני חוכך עוד לומר דאפי' בנודר שנה אחת סתם אסור בעבורה. וכבר הרגיש עליו הש"ך בסי' ר"כ סקט"ו ומיישב דהכא מיירי בעומד בר"ה ושם בעומד באמצעה וע"ש טעם החילוק. אבל קשה דא"כ איכא למימר דלעולם דיניה כשנה אחת ומיירי בעומד באמצע השנה. וי"ל:

Translation: "Ran, the words 'And learn from it that a year...' – that if its status were one year [standard], it would not be forbidden because of [the leap month]. It appears to contradict what he wrote later (63a) at the end of the Mishnah, and I further ponder that even one who vows 'a year' simply is forbidden because of [the leap month]. And the Shach already noted this contradiction in Siman 260, Sk 16, and explains that here we are dealing with someone standing at Rosh Hashanah, and there [later] with someone standing in the middle [of the year], and see there the reason for the distinction. But it is difficult, for if so, one could say that its status is always one year, and it refers to someone standing in the middle of the year. And it can be explained."

The Rashash, known for his deep critical analysis, points out a potential tension within the Ran's own commentary and possibly between different parts of the Talmud. He questions the Ran's explanation of the Gemara on 61a, suggesting it might contradict a later statement on 63a or the general understanding of vows for "a year." The Rashash highlights that even a general vow of "a year" should, according to some views, include the leap month. He references the Shach (a prominent Acharon) who attempts to resolve this by positing a difference based on when the vow was made (at Rosh Hashanah vs. mid-year). However, the Rashash expresses difficulty with this resolution, suggesting that the ambiguity of "a year" might persist, and the distinction between standing at Rosh Hashanah and mid-year is not entirely satisfactory. This signals a complex interpretive challenge in definitively establishing the duration of such vows.

Ran on Ran on Nedarim 61a:2:1 (Hebrew/Aramaic - translate):

מהו דתימא הלך אחר רוב שנים - דלית בהן עבור ונימא דאע"ג דאמר השנה לא ליתסר אלא כרוב שנים קמ"ל: ולענין הלכה כיון דבעיין לא אפשיטא נקטינן לחומרא דיום כיום אחד דמי ואסור מעת לעת:

Translation: "What if you would say, 'follow the majority of years' – which do not have an intercalated month, and one might say that even though he said 'this year,' he is not forbidden except for [a period equivalent to] most years. It teaches us [that this is not the case]. And regarding halakha, since it is a doubt, we are strict and rule that 'a day' is like 'today,' and it is forbidden from time to time."

The Ran here addresses another potential interpretation that the Gemara preempts. The Gemara considers the possibility that when someone vows for "this year," they might intend to follow the majority of years, which are non-leap years. Under this interpretation, a leap month would not be included in the duration of the vow. The Gemara teaches (קמ"ל - kami la'melamed - it teaches us) that this is incorrect; "this year" includes the entire duration, even if it's extended by a leap month. The Ran then transitions to the practical halakhic conclusion regarding "a day" (יום). He states that because this matter involves doubt (בעיא), we are stringent (נקטינן לחומרא) and treat "a day" as equivalent to "today" (כהיום), meaning it is forbidden from the time of the vow until the same time on the following day (מעת לעת). This is a crucial application of the principle of safek.

Rashi on Rashi on Nedarim 61a:2:1 (Hebrew/Aramaic - translate):

ולא אית בהו עיבור - ולא ליתסר בעיבורה קא משמע לן: היה עומד בשנה של יובל והיה אומר קונם יין שאיני טועם יובל מהו:

Translation: "And they do not have an intercalation – and he is not forbidden because of the leap month, it teaches us. [The Gemara then asks:] If one was in the Jubilee year and said, 'Konam, wine which I do not taste for the Jubilee,' what is the law?"

Rashi clarifies the first part of the Ran's statement. He explains that the Gemara is teaching that a vow for "this year" is not limited to a standard twelve months if the year is a leap year. The vow extends to cover the full duration, including the leap month. Rashi then introduces the next stage of the Gemara's discussion: the dilemma concerning vows related to the Jubilee year. This transition signals a move from linear time (years) to cyclical time (Jubilee cycles).

Tosafot on Tosafot on Nedarim 61a:2:1 (Hebrew/Aramaic - translate):

הלך אחר רוב שנים - ולא אית בהו עיבור וכשנדר בשבט ונאסר בחדש העיבור יהיה מותר בחדש אחד לפני ראש השנה קמ"ל דכולה עד סופה נקראת שנה:

Translation: "'Follow the majority of years' – which do not have an intercalated month, and when he vows in Shevat and becomes forbidden in the leap month, he would be permitted for one month before Rosh Hashanah. It teaches us that the entire [year] until its end is called a year."

Tosafot, in their characteristic manner of posing questions and offering subtle distinctions, elaborates on the "follow the majority of years" argument. They illustrate how this would lead to a shortened vow duration if the year were a leap year. For example, if someone vows in Shevat (February/March) and the year is a leap year, the vow, if limited to a standard twelve months, would expire before Rosh Hashanah, leaving the leap month (Adar II) outside the vow. The Gemara's teaching (קמ"ל) is that this is not the case; the vow encompasses the entire year until its end, regardless of whether it's a leap year or not. This reinforces the principle of temporal completeness in vows.

Friction

The core friction in this sugya revolves around the precise definition and temporal scope of vows, particularly when the timeframe is articulated with terms that can be interpreted in multiple ways, and when those terms interact with the structure of the Jewish calendar, specifically leap years and the Jubilee cycle.

The Kushya: Is "A Year" (שנה) Always Inclusive of Leap Months?

The initial debate in the Gemara (61a) presents a tension regarding the interpretation of "a year" (שנה) in the context of a vow. The Gemara posits that the Mishnah might be teaching that a vow of "a year" is equivalent to a vow of "this year" (השנה). The doubt arises from the potential interpretation that "a year" might refer to a standard twelve months, thus excluding the month added in a leap year (עיבור). The Gemara's resolution seems to be that "a year" indeed includes the leap month, just as "this year" does.

However, the Rashash (as noted in the Readings) points to a significant difficulty. He observes that this teaching appears to contradict other discussions, particularly concerning vows made mid-year, where it might be argued that a generic "year" vow should be limited to twelve months, especially if the vower is unaware of the impending leap month or intends to follow the majority of non-leap years. The Rashash questions the Ran's reconciliation, which suggests a distinction based on whether the vow is made at Rosh Hashanah (where the full year is clearly defined) versus mid-year.

The fundamental kushya is: Does a vow of "a year" (שנה) inherently include the entire current calendar year, including any leap month, or is it potentially limited to twelve months, especially if made mid-year or if the vower's intent leans towards the "majority of years" (רוב שנים)? If the latter, then the Gemara's resolution on 61a, establishing equivalence between "שנה" and "השנה," requires further substantiation and clarification, particularly concerning the safek (doubt) raised by the Rashash.

The Terutz: The Principle of Temporal Inclusiveness and the Role of Safek

The primary terutz offered by the Gemara, and elaborated by the commentators, is rooted in two principles:

  1. Temporal Inclusiveness: The Gemara teaches that "this year" (השנה) inherently includes the leap month. The subsequent teaching that "a year" (שנה) is like "this year" extends this principle. This suggests a default halakhic understanding that when one makes a vow tied to a temporal unit like "a year," the vow encompasses the actual duration of that unit as it unfolds in reality, not a theoretical or averaged duration. The Gemara's argument against "following the majority of years" (הלך אחר רוב שנים) directly addresses the temptation to default to a twelve-month period. The Gemara's "קמ"ל" (it teaches us) indicates that this assumption is incorrect; the vow is for the entirety of the year, whatever its length.

  2. The Principle of Safek: When the Gemara transitions to the case of "a day" (יום), it explicitly states: "ולענין הלכה כיון דבעיין לא אפשיטא נקטינן לחומרא דיום כיום אחד דמי ואסור מעת לעת" (And regarding halakha, since it is a doubt, we are strict and rule that 'a day' is like 'today,' and it is forbidden from time to time). This is the crucial application for practical halakha. Even if there's a theoretical debate about the precise duration or the vower's intent, in cases of doubt concerning temporal vows, we adopt the stricter interpretation. Therefore, "a day" is treated as "today," meaning from the moment of the vow until the same moment the next day. This principle of safek l'chumra is a fundamental heuristic in Jewish law and serves to resolve ambiguities in a manner that maximizes stringency for the one who made the vow.

While the Rashash's concern about the distinction between Rosh Hashanah and mid-year vows remains a point of subtle debate, the core terutz lies in the Gemara's insistence on the full temporal scope of the vow and the application of safek l'chumra to resolve any lingering doubts. The Gemara prioritizes the actual, unfolding temporal reality over abstract averaging or potentially unarticulated intentions, unless those intentions are explicitly clarified.

Intertext

Leviticus 25:10: "וּקְדַּשְׁתֶּם אֵת שְׁנַת הַחָמֵשׁ שׁוּפַר וְטַעַם קוֹל הַשּׁוֹפָר בְּכָל אֲרְצְכֶם." (And you shall sanctify the fiftieth year, and proclaim liberty throughout your land.)

This verse is central to the discussion regarding the Jubilee year (יובל) and its place in the calendrical cycle. The Gemara on 61b debates whether the fiftieth year is counted as part of the preceding cycle (i.e., the 49th year being the culmination) or as the commencement of the next cycle.

  • The Rabbis: Maintain that the Jubilee year is counted as the fiftieth year but not as the first year of the next cycle. This means the cycle following the Jubilee year begins with year one, not year fifty.
  • Rabbi Yehuda: Argues that the Jubilee year is included in the count of the subsequent seven-year cycle, implying it begins the next cycle.

The Gemara's debate here directly impacts the interpretation of vows related to the Jubilee. If one vows something "until the Jubilee," the question arises whether the Jubilee year itself is included in the duration of the vow or marks its end. According to the Rabbis, the Jubilee year is the end of the preceding cycle, thus the vow would extend through it. According to Rabbi Yehuda, it begins the next cycle, implying the vow would end before it, or at its very beginning. This intertextual link highlights how fundamental calendrical interpretations shape the understanding of temporal vows.

Shulchan Aruch, Orach Chayim 562:1: "המתענה ביום הכפורים ולא נדר וביום הכפורים נאסר עליו כל ימיו.."

While not directly on Nedarim 61, this halakha in the Shulchan Aruch touches upon the concept of vows and their temporal limitations in a practical context. It deals with someone who fasts on Yom Kippur and, without explicitly vowing, becomes forbidden from eating. The Mishnah in Nedarim deals with vows specifying an endpoint. The Shulchan Aruch here addresses the consequence of a general prohibition that might be interpreted as a vow or akin to one.

The relevance lies in the underlying principle of how prohibitions, once established, are measured. The Nedarim sugya meticulously defines the temporal boundaries of vows ("until X," "until X arrives," "until X passes"). The Shulchan Aruch, by extension, needs to define the duration of such established prohibitions. The meticulousness of Nedarim 61 in defining temporal markers like "until the summer" or "until it passes" informs the broader understanding of how time is measured in halakha when prohibitions are enacted, whether through explicit vows or other mechanisms. The debate in Nedarim 61 regarding fixed vs. unfixed times and the precise meaning of "until" directly informs the precise application of such rulings in later codified law.

Psak/Practice

The discussion in Nedarim 61 has direct implications for the psak (halakhic ruling) concerning the duration of vows.

  • "A Year" (שנה) vs. "This Year" (השנה): The Gemara's resolution that "a year" is generally equivalent to "this year" means that a vow for "a year" will include any leap month. This is a stringent ruling, prioritizing the full duration of the actual year over a standard twelve-month period.
  • Fixed vs. Unfixed Times: The Mishnah clearly distinguishes between fixed temporal points (מועד קבוע) and unfixed ones (מועד שאינו קבוע).
    • For fixed times (like Passover, Shavuot, Sukkot), "until it arrives" (עד שיבא) means the prohibition ends at the beginning of the festival. "Until it will be" (עד שיהיה) means it ends at the end of the festival. This distinction is crucial for precision.
    • For unfixed times (like "summer" or harvests), the interpretation is more lenient. "Until it arrives" (עד שיבא) or "until it will be" (עד שיהיה) both mean the prohibition ends when the season arrives or the event begins, not when it concludes. The specific markers for "summer" (arrival of fruit in baskets) and "summer has passed" (setting aside the knives) illustrate this.
  • Safek L'chumra: The principle of safek l'chumra is paramount. As seen with "a day" (יום) being treated as "today" (היום) from time to time, any ambiguity in the temporal scope of a vow will be resolved stringently. This means if there's doubt about whether a vow ends at the beginning or end of a period, or whether it includes an extra month, the ruling will lean towards extending the prohibition.

In practice, when encountering a vow specifying a temporal limit, one must carefully analyze:

  1. Is the time fixed or unfixed?
  2. What precise language is used ("arrives," "will be," "passes")?
  3. Does the context involve cyclical time (like Jubilee) or linear time (like years)?
  4. Where any doubt exists, the presumption is towards extending the prohibition.

Takeaway

The measurement of time in vows is not merely a semantic exercise but a complex halakhic calculation deeply intertwined with the Jewish calendar and the principle of safek l'chumra. Precise language and careful consideration of temporal markers are essential, with ambiguity always leaning towards greater stringency for the vower.