Mishnah Chullin 12:3-4

Sugya Map

• Issue: Delineating the scope and specific conditions for the fulfillment of the mitzvah of Shiluach HaKan (sending away the mother bird from the nest), as commanded in Devarim 22:6-7.
• Nafka Mina(s):
  • Applicability to different bird types (wild vs. domesticated, kosher vs. non-kosher, sacrificial vs. non-sacred).
  • The precise definition of "resting upon" (rovatzet).
  • The viability of the offspring (fledglings capable of flight, unfertilized eggs).
  • The minimum number of offspring required.
  • The obligation to send multiple times if the mother returns.
  • The halachic principle regarding prohibitions that entail an active command (Lo Ta'aseh she'Yesh Bo Kum Asei) and its implications for malkot.
  • The a fortiori inference (kal va'chomer) regarding reward for mitzvot.
• Primary Sources:
  • Devarim 22:6-7 ("כי יקרא קן צפור לפניך... שלח תשלח את האם").
  • Mishnah Chullin 12:3-4.

Text Snapshot

The Mishnah Chullin 12:3-4 meticulously details the mitzvah of Shiluach HaKan:

"היתה מעפעפת, בזמן שכנפיה נוגעות בקן – חייב לשלח. אין כנפיה נוגעות בקן – פטור מלשלח. אין שם אלא אפרוח אחד או ביצה אחת – חייב לשלח, שנאמר 'קן קן' מכל מקום. היו שם אפרוחים מפריחין או ביצים מוזרות – פטור מלשלח, שנאמר 'והאם רובצת על האפרוחים או על הביצים', מה אפרוחים בני קיימא, אף ביצים בנות קיימא – יצאו מוזרות. ומה ביצים צריכות לאימן, אף האפרוחים צריכין לאימן – יצאו מפריחין. שלחה וחזרה, שלחה וחזרה, אפילו ארבעה וחמשה פעמים – חייב לשלח, שנאמר 'שלח תשלח את האם'. אמר: הריני נוטל את האם ומשלח את הבנים – חייב לשלח, שנאמר 'את האם'. נטל את הבנים והחזירן, וחזרה האם ורבצה עליהן – פטור מלשלח. הנוטל את האם עם הבנים – רבי יהודה אומר: לוקה ואינו משלח. וחכמים אומרים: משלח ואינו לוקה. זה הכלל: כל מצוות לא תעשה שיש בה קום עשה – אין לוקין עליה. ואם על מצווה קלה שבאסיסר אמרה תורה 'למען ייטב לך והארכת ימים' – קל וחומר למצוות חמורות שבתורה."

--- Mishnah Chullin 12:3-4

Dikduk/Leshon Nuance

• "מעפעפת": This term, meaning "hovering" or "flapping," specifies the liminal state of the mother bird. The Mishnah clarifies that mere proximity isn't enough; the wings must be touching (nog'ot) the nest. This is a precise definition of "resting upon" (rovatzet) for the purpose of the mitzvah.
• "קן קן מכל מקום": This derasha from the doubled word "קן" (nest) in Devarim 22:6, interpreted to mean "a nest in any case" (even with one offspring), is highlighted by Mishnat Eretz Yisrael as a challenging one due to its unconventional application for a gzeirah shavah or ribuy from a non-Torah text.
• "אפרוחים מפריחין" / "ביצים מוזרות": The Mishnah's use of these specific terms, followed by a derasha on "והאם רובצת על האפרוחים או על הביצים," provides a halachic definition of "viable" offspring. "מפריחין" (capable of flying) are those no longer dependent, while "מוזרות" (unfertilized/defective eggs) are not viable.
• "שלח תשלח": The doubled verb is a classical lashon in Chazal to indicate repetition or intensity. Here, it mandates repeated sending.
• "את האם": The specific object "the mother" in the verse "שלח תשלח את האם" is emphasized by the Mishnah to mean the mitzvah is specifically about sending the mother, not the offspring, even if one attempts to circumvent the mitzvah by sending the offspring.
• "כל מצוות לא תעשה שיש בה קום עשה": This foundational klal (principle) defines a category of negative commandments that, when violated, are not punishable by malkot due to the accompanying positive command that can still be fulfilled.

Readings

1. Rambam on Mishnah Chullin 12:3:1

The Rambam, characteristically concise, elucidates two points from the Mishnah:

"היתה מעופפת בזמן שכנפיה נוגעות בקן חייב כו': שלחה וחזרה שלחה וחזרה אפילו ארבעה וחמשה כו': שלח מקור והמקור נופל על המעט וההרבה ולפיכך חייב מצד שהוא מקור לשלח אותה ואפילו אלף פעמים וכל ההלכה הזאת מבוארת:"

--- Rambam, Mishnah Chullin 12:3:1 (Sefaria)

The Rambam explains the obligation to send even one offspring by stating, "שלח מקור והמקור נופל על המעט וההרבה" (sending is a makor [root/source] and this makor applies to the few and the many).

• Chiddush: The Rambam frames the mitzvah of sending as a fundamental "root" principle that is not limited by quantity, thereby inherently including even a single offspring. This isn't just a derasha for a ribuy (inclusion), but a conceptual understanding of the mitzvah's essence as universally applicable. He then applies this makor concept to the repeated sending, stating one is obligated "אפילו אלף פעמים" (even a thousand times), emphasizing the absolute nature of the makor not to take the mother.

2. Tosafot Yom Tov on Mishnah Chullin 12:3:2 & 12:3:4

The Tosafot Yom Tov offers linguistic precision and contextual understanding. On the derasha "מה אפרוחים בני קיימה אף ביצים בנות קיימה," he notes:

"ואפרוחים וביצים אורחיה דקרא הוא למנקט רבים ברוב קנים. דאי איפכא דבעינן רבים וקן מ"מ לרבות מפריחים ומוזרות. א"כ נכתוב קרא והאם רובצת עליהם. גמרא:"

--- Tosafot Yom Tov, Mishnah Chullin 12:3:2 (Sefaria)

• Chiddush: He argues that the use of plural "אפרוחים וביצים" (fledglings and eggs) in the verse is merely "אורחיה דקרא" (the way of the verse to use plural in most nests), rather than an indication that a plurality is required. This is crucial for affirming the Mishnah's earlier ruling that even one fledgling or egg suffices. His counter-argument ("דאי איפכא...") clarifies that if the pasuk intended to include non-viable offspring, it would have used a generic "עליהם" (upon them), implying the specific terminology is for exclusion.

Further, regarding "שלח תשלח," he clarifies the derasha:

"שנאמר שלח . לשון הר"ב שנאמר שלח ולעולם משמע. ותשלח דרשינן לה לקמן. וז"ל הרמב"ם שלח מקור והמקור נופל על המעט והרבה. ועי' בכ"מ שם [פי"ג מה"ש]:"

--- Tosafot Yom Tov, Mishnah Chullin 12:3:4 (Sefaria)

• Chiddush: He distinguishes between the simple meaning of "שלח" (send) as implying a general obligation, and the deeper derasha of the doubled "תשלח" (you shall send) for repetition, which he notes is expounded "לקמן" (later, presumably in the Gemara). This shows an awareness of layered derashot, where the Mishnah might present a simpler one and the Gemara expands. He then connects this to the Rambam's concept of "שלח מקור," suggesting a harmony between the simple reading and the makor idea.

3. Mishnat Eretz Yisrael on Mishnah Chullin 12:3:1-3

Mishnat Eretz Yisrael delves into the problematic derasha of "קן קן מכל מקום":

"אין שם אלא אפרוח אחד או ביצה אחת חייב – אף על פי שאין כאן אפרוחים (לשון רבים), שנאמר קן קן מכל מקום – וכן הדרשה בספרי דברים (רכו, עמ' 259)... ברם אין זה רגיל שחכמים ידרשו גזרה שווה בין פסוק בתורה לפסוק בנביאים או בכתובים... על כל פנים, הדרשה קשה הרבה יותר. רגיל היה לדרוש 'אפרוחים מיעוט שניים', וכן הבבלי מייחס לחכם אלמוני, 'ההוא מרבנן', דרשה חריגה זו שאינה זוכה לתגובת הבבלי. יתר על כן, התלמוד מציע דרשה חילופית למילים 'קן' 'קן'. לפי דרכנו השאלה איננה קשה. ההלכה לא נלמדה מהפסוק, ואין היא פירוש לו. ההלכה הייתה ידועה ונבעה מסיבות אחרות, ורק הצמידוה לפסוקים אלו."

--- Mishnat Eretz Yisrael, Mishnah Chullin 12:3:1-3 (Sefaria)

• Chiddush: This commentary raises a significant kushya regarding the derasha "קן קן מכל מקום." It notes the unlikelihood of a gzeirah shavah between "קן" in Devarim (Torah) and its occurrences in Neviim or Ketuvim (Yeshayahu 16:2, Tehilim 84:4) to derive the inclusion of a single offspring. It also points out that the Gemara itself (Chullin 139a) struggles with this derasha, offering alternatives. Its profound chiddush is a meta-halachic claim: "ההלכה לא נלמדה מהפסוק, ואין היא פירוש לו. ההלכה הייתה ידועה ונבעה מסיבות אחרות, ורק הצמידוה לפסוקים אלו" (The halakha was not derived from the verse, nor is it a commentary on it. The halakha was known and stemmed from other reasons, and they merely attached it to these verses). This radically redefines the relationship between halakha and midrash.

Friction

The Aporia of "קן קן מכל מקום"

The Mishnah's derivation that even one fledgling or egg obligates shiluach haKan through the derasha "קן קן מכל מקום" presents a significant hermeneutical challenge, meticulously highlighted by Mishnat Eretz Yisrael. The difficulty arises from two points:

1. Methodological Anomaly: The phrase "מכל מקום" typically accompanies a gzeirah shavah (verbal analogy). However, the only other occurrences of "קן" in the Tanakh outside of Devarim 22:6 are in Yeshayahu 16:2 and Tehilim 84:4. It is highly unusual for Chazal to derive a gzeirah shavah between a pasuk in the Torah and one in Neviim or Ketuvim for a halacha l'ma'aseh. This raises a fundamental question about the mesorah of derasha.
2. Gemara's Silence & Alternatives: The Gemara in Chullin 139a, rather than accepting this derasha at face value, presents alternative derashot for "קן קן" or questions the Mishnah's source. This implies that even the Sages of the Gemara found the Mishnah's stated derasha problematic or at least not the most straightforward path. The Gemara's willingness to seek alternatives underscores the inherent tension.

Terutz: Halakha as Prior to Derasha

The most compelling resolution to this kushya is offered by Mishnat Eretz Yisrael:

"ההלכה לא נלמדה מהפסוק, ואין היא פירוש לו. ההלכה הייתה ידועה ונבעה מסיבות אחרות, ורק הצמידוה לפסוקים אלו."

--- Mishnat Eretz Yisrael, Mishnah Chullin 12:3:1-3 (Sefaria)

This terutz posits that the halakha that one fledgling or egg suffices is not derived from the pasuk via derasha, but rather, it is a pre-existing halacha l'Moshe mi'Sinai or a takana d'Rabbanan (rabbinic enactment) that was subsequently asmachta d'Oraita (given a scriptural allusion) using the phrase "קן קן מכל מקום." In this framework, the derasha is not the generative source but a mnemonic or supportive reference. This approach reconciles the problematic derasha by shifting its epistemological status from derivation to allusion. The halakha holds independent validity, and the textual link merely provides a scriptural echo. This terutz respects the Mishnah's statement while acknowledging the methodological difficulties inherent in the derasha itself, offering a meta-halachic insight into the relationship between the Oral and Written Torah.

Intertext

1. The Principle of "כל מצוות לא תעשה שיש בה קום עשה אין לוקין עליה"

The Mishnah concludes its discussion of shiluach haKan with the foundational principle that "כל מצוות לא תעשה שיש בה קום עשה – אין לוקין עליה" (any negative commandment that entails a positive commandment for its rectification is not punishable by malkot). This klal is central to halachic jurisprudence and appears in numerous sugyot.

• Parallels:
  • Kilayim: For instance, the prohibition against sowing kilayim (mixed species) (Devarim 22:9) is a lo ta'aseh. If one violates it, there is no kum asei to undo the act, hence malkot would apply. However, if one violates the lo ta'aseh of kilayim in a vineyard (Devarim 22:9), the Gemara in Bava Metzia 32b and Sanhedrin 85a discusses whether the associated kum asei (of removing the kilayim) would preclude malkot. The Rambam rules in Hilchot Ma'achalot Asurot 16:21, following the klal, that if one eats forbidden fats (chelev), which is a lo ta'aseh, and there is no kum asei associated, one receives malkot. But if one fails to build a ma'akeh (guardrail) for his roof (Devarim 22:8), a lo ta'aseh which implies a kum asei to build it, malkot are not applied if he simply hasn't built it yet, only if he actively removed it. The Shiluach HaKan case is analogous to the ma'akeh: taking the mother is a lo ta'aseh ("לא תקח האם על הבנים"), but the Torah immediately provides a kum asei ("שלח תשלח את האם"), thus precluding malkot.

2. The Reward of "למען ייטב לך והארכת ימים"

The Mishnah highlights the significant reward of "למען ייטב לך והארכת ימים" (that it may be well with you, and that you may prolong your days) for shiluach haKan, a "מצווה קלה שבאסיסר" (a simple mitzvah worth an issar). It then derives by kal va'chomer (a fortiori) that the reward for more "demanding" mitzvot must be even greater.

• Parallels:
  • Kibbud Av Va'Em: This exact reward formula appears in the Ten Commandments for Kibbud Av Va'Em (honoring parents) (Shemot 20:12, Devarim 5:16). The Gemara in Kiddushin 39b-40a and Chullin 142a discusses the fact that two seemingly "light" mitzvot (shiluach haKan and kibbud av va'em) share this profound promise of longevity and well-being. This juxtaposition raises philosophical questions about the nature of reward and the categorization of mitzvot as "light" or "heavy."
  • Theological Implications: The Gemara in Bava Metzia 32b brings a famous story of a child who fulfills both kibbud av va'em and shiluach haKan and yet dies. This leads to the famous discussion between R' Yaakov and R' Yishmael about the meaning of "והארכת ימים" – referring to a lengthy life in Olam Haba (the World to Come) rather than necessarily this world. This intertextual connection transforms the simple kal va'chomer into a profound theological discourse on reward, free will, and the ultimate destiny of the soul.

Psak/Practice

The sugya in Mishnah Chullin 12:3-4 forms the bedrock of the halachot of Shiluach HaKan, codified extensively in the Shulchan Aruch (Yoreh De'ah 318).

1. Scope of Obligation: The Mishnah defines that the mitzvah applies only to kosher, non-sacrificial, wild birds, or domesticated birds nesting in the wild (pardes). The Shulchan Aruch reflects this precisely (YD 318:1).
2. Definition of "Rovetzet": The nuance of "מעפעפת" and "כנפיה נוגעות בקן" is adopted, requiring physical contact for the obligation to send (YD 318:2).
3. Viable Offspring: The exclusion of "אפרוחים מפריחין" and "ביצים מוזרות" is standard halacha, emphasizing that the mitzvah is for the perpetuation of the species, not for non-viable entities (YD 318:3).
4. Minimum Offspring: The ruling that "אין שם אלא אפרוח אחד או ביצה אחת – חייב" is accepted (YD 318:3), despite the textual difficulty of its derasha.
5. Repeated Sending: The requirement to send the mother multiple times if she returns, derived from "שלח תשלח," is codified (YD 318:4).
6. "Lo Ta'aseh she'Yesh Bo Kum Asei": The principle "כל מצוות לא תעשה שיש בה קום עשה – אין לוקין עליה" is a fundamental meta-psak heuristic. It is universally accepted in halacha that one who violates such a prohibition is not liable for malkot, as the positive command allows for rectification. This applies directly to the case of taking the mother bird (YD 318:5). This principle is crucial not only for Shiluach HaKan but for understanding the punitive framework of mitzvot.

Takeaway

This sugya exemplifies the intricate interplay between textual derasha and established halakha, revealing that some halachot may pre-exist their scriptural allusions. Furthermore, it highlights foundational halachic principles concerning the nature of punishment and the profound, often meta-physical, promise of reward for mitzvot.