Deuteronomy 23

Sugya Map: The Mamzer Threshold

• Core Issue: Defining the legal parameters of Mamzerut through the juxtaposition of Arviyot (forbidden unions).
• Nafka Mina: Whether a child born of a union punishable only by malkot (flagellation) attains the status of mamzer.
• Primary Sources: Deuteronomy 23:1-2; Yevamot 49a; Kiddushin 67b.

Text Snapshot

"No man shall marry his father’s former wife, so as to remove his father’s garment (כנף אביו)... No one misbegotten (mamzer) shall be admitted into the congregation..." (Deuteronomy 23:1-2).

• Leshon Nuance: The term kanaf (skirt/garment) implies a specific legal intimacy—distinct from full chuppah—hinting at the shomeret yavam (widow awaiting levirate marriage). The juxtaposition of the mamzer prohibition immediately following this verse serves as a hekesh (linkage).

Readings

• Rashi (Yevamot 49a): Argues that the juxtaposition teaches that only unions involving karet (excision) generate a mamzer. Since the shomeret yavam is a doda (aunt), the union carries karet, thus anchoring the definition of mamzer to the severity of the underlying prohibition.
• Haamek Davar (Deuteronomy 23:1): Distinguishes between chuppah (full marriage) and kanaf (the partial covering of a yevama). He interprets the prohibition as a tiered system: if the union is merely an act of "uncovering" (lacking formal kiddushin), the child is still a mamzer, provided the underlying relationship is forbidden by karet.

Friction

• Kushya: If the mamzer status is derived from the karet of the shomeret yavam, why does the Torah place the "crushed testes" (petzu'a daka) law between the Arviyot and the Mamzer? Does this hefsek (interruption) not break the hekesh?
• Terutz: As noted by Tosafot (cited in Mizrachi), the petzu'a daka category is legally irrelevant to the generation of a mamzer (as they lack procreative capacity). Therefore, it is a non-substantive interruption that does not disturb the logic of the hekesh.

Intertext & Psak

• Cross-Ref: Shulchan Aruch, Even HaEzer 4:13. The halacha follows the principle that mamzerut requires a union where kiddushin cannot take hold (ein lahem kiddushin), specifically in prohibited relationships carrying karet.
• Meta-Psak: The severity of the mamzer status is restricted to the most egregious sexual transgressions. The "gap" between malkot and karet serves as a fence, preventing the proliferation of the mamzer label for lesser infractions.

Takeaway

The Torah defines the mamzer not through the act of birth, but through the legal impossibility of the parents' union. Mamzerut is a status of "structural exclusion" reserved exclusively for unions that violate the foundational sanctity of the karet prohibitions.