Nedarim 78

Sugya Map

• Core Issue: The distinct legal mechanisms of Hafara (nullification/annulment of the future) vs. Hattarat Nedarim (dissolution of the root).
• Primary Sources: Numbers 30:2 ("This is the thing"), Leviticus 17:2 (Gezerah Shavah with Shechutei Chutz), Masechet Nedarim 78a-b.
• Nafka Mina: Can a husband dissolve (hattarah)? Can a Sage nullify (hafara)? Who constitutes a valid court for dissolution (expert vs. three laymen)?

Text Snapshot

• "זה הדבר" (Num 30:2): The Gemara treats this as an exclusionary clause (gezerah). Rashi (s.v. זה הדבר) notes: "Words as they are written—the husband does not dissolve, for it is written ‘if he annuls (yafeir), he annuls’ (v. 13)."
• Nuance: The Leshon highlights a rigid dichotomy: Hafara is the husband's prerogative of cessation; Hattarah is the Sage's prerogative of retrospection.

Readings

• Ran (ad loc.): Notes the Yerushalmi’s distinction in Leshonot. A Sage uses the language of "there is no vow here" (Ein kan neder), targeting the root. A husband uses "annulled for you" (Mufar lach), targeting the continuity.
• Ritva (ad loc.): Focuses on the psychological vs. the performative. Hafara requires verbalization (hotza'ah bisfatayim); one cannot annul "in the heart."

Friction: The Expert's Dilemma

Kushya: If the Torah specifies "Heads of the Tribes" for vow-dissolution, how can we permit three laymen? Terutz: The Gemara (78b) resolves this through a Gezerah Shavah with the Festivals. Just as the Festivals require the court to sanctify them, yet the court is comprised of experts, the "Heads of the Tribes" reference authorizes a single expert (Yachid Mumcheh). However, the tradition (via Rav Asi bar Natan) establishes that the nature of the authority (laymen vs. expert) is flexible, provided the communal structure of the "Heads" is maintained.

Intertext

• SA Yoreh Deah 234:1: Codifies the distinction: A husband nullifies (mafeir), a Sage dissolves (matir).
• Parallels: The Gezerah Shavah linking Nedarim to Shechutei Chutz creates a meta-halachic bridge: the sanctity of speech is treated with the same stringency as the sanctity of the sacrificial act.

Psak/Practice

The Psak follows the distinction: A husband’s power is limited to his status as "partner" in the vow's duration. The Sage’s power is judicial, based on Petach (finding an opening/regret) that renders the vow void ab initio. Practically, one does not ask a husband for a Hattarah nor a Rabbi for a Hafara.

Takeaway

The Torah differentiates between termination (Husband) and annulment (Sage). One ends the future; the other erases the past. Know which door you are knocking on.