Nedarim 88

Sugya Map

• Issue: Does "partial knowledge" (mikzat yedi'ah) constitute "full knowledge" (kull yedi'ah)?
• Nafka Mina: Whether a blind person is liable for galut (exile) for unintentional killing, and whether a husband can annul a wife's vow based on partial awareness.
• Primary Sources: Deuteronomy 19:4-5; Nedarim 88a; Eruvin 73b.

Text Snapshot

Nedarim 88a: Rava resolves the tension between Rabbi Meir’s positions: “Ha-ka me-inyana di-kra” (Here, it follows the context of the verse). The dikduk hinges on whether "without seeing" (b'lo re'ut) functions as a restrictive gezerah shavah or an expansive ribui.

Readings

• Rashi (88a s.v. Ha-ka me-inyana di-kra): Argues that Rabbi Meir doesn't actually maintain a universal rule about "partial knowledge." Rather, the specific verse regarding the murderer necessitates a ribui to include the blind, whereas elsewhere, he adheres to a stricter reading of intent.
• Ran (88a s.v. Ha-ka me-inyana di-kra): Suggests the dispute isn't philosophical but linguistic. The verses themselves dictate the scope. He rejects the idea that Rabbi Meir relies on a broad principle of mikzat yedi'ah, asserting that the blind person's inclusion is a local anomaly driven by the specific mechanics of the Torah’s phrasing in Deuteronomy 19:5.

Friction

Kushya: How can Rabbi Meir hold that "partial knowledge" is not knowledge regarding the blind (requiring a ribui to include them), yet elsewhere (in the context of vows) maintain that partial knowledge is sufficient to count as knowledge? Terutz: As Rava notes, we do not apply a blanket logic. We look at the inyana di-kra. In the case of exile, the phrasing b'lo re'ut is specifically parsed to avoid the trap of "double inclusion" (ein ribui achar ribui ela le-ma'et), forcing a specific reading for that verse alone.

Intertext

• Makkot 7b: Parallels the discussion of the blind person’s liability in the context of the unintentional killer, reinforcing that the halakhah of galut is tied to the physical capacity to navigate space.
• Shulchan Aruch, Yoreh De'ah 234:55: Reflects the meta-halakhic weight of a husband's "hearing" (shemi'ah) of a vow, where the scope of knowledge remains tethered to the specific intent of the parties involved.

Psak/Practice

The suqya serves as a warning against "systematizing" chazal too aggressively. We don't construct a unified theory of "knowledge" across the Talmud; rather, we prioritize the local pshat of the verse. When applying a sevara (logic), ensure it doesn't override the specific linguistic constraints of the pasuk.

Takeaway

Knowledge in halakhah is not a monolithic category; it is defined by the specific domain of the law. Context dictates cognition.