Nedarim 77

Sugya Map

• Issue: The intersection of Hatarat Nedarim (dissolution by an expert) and Hafrat Nedarim (nullification by a husband/father) with Hilchot Shabbat.
• Nafka Mina: Whether the heter to perform these acts on Shabbat is restricted to tzorech Shabbat (matters of necessity) or extends to general vows.
• Primary Sources: Nedarim 77a; Shabbat 157a; Ran ad loc.

Text Snapshot

• Nedarim 77a: "מפירין נדרים בשבת... לצורך השבת."
• Nuance: The Gemara distinguishes between hafarah (husband's unilateral power) and she'eilah (expert-led dissolution). The dikduk of the Mishna suggests a functional limit—on Shabbat, we circumvent the issur of din (judgment) or mekach u'memkar (transactions) specifically because of the urgency of the day.

Readings

• Ran (77a s.v. הא דקתני): Argues that the restriction of tzorech Shabbat applies to both hafarah and she'eilah. His chiddush is that the entire mechanism of "vow-work" on Shabbat is a legislative concession; absent the tzorech, we return to the baseline prohibition of engaging in judicial activity.
• Rashi (77a s.v. שהן לצורך השבת): Frames the necessity narrowly: e.g., vows against food or ornaments. He views the Shabbat permission as a prophylactic against the discomfort caused by the vow, rather than a general nullification of the vow’s legal status.

Friction

• Kushya: If she'eilah (asking a Chacham) looks like din (judgment), why is it permitted on Shabbat at all?
• Terutz: The Gemara (77b) concludes that since it can be done by a single expert, while standing, and even by relatives, it lacks the formal appearance of a beit din. It is not a din, but an akedah (binding) or hatarah (releasing) of the issur itself—an ontological shift in the vow's status, not a judicial verdict.

Intertext

• Shulchan Aruch, Yoreh De’ah 234:56: Incorporates the practice of hatarat nedarim on Shabbat exclusively for tzorech.
• Parallel: This mirrors the logic of Hatarat Nedarim on Yom Kippur (Kol Nidrei), where the urgency of the holy day supersedes the standard procedural constraints.

Psak/Practice

• Heuristic: One does not perform "general maintenance" of vows on Shabbat. Only vows that impede Oneg Shabbat or create immediate social conflict are candidates for hatarah. The husband must avoid explicit legal terminology ("Mufar") to prevent the appearance of kinyan or din, opting instead for the "indirect" method—offering food/drink to implicitly override the vow.

Takeaway

On Shabbat, the law prioritizes the person over the precedent; we bypass technical judicial procedure to alleviate immediate distress, provided the "work" remains distinct from formal court activity.