Chullin 20

Sugya Map

• Core Issue: Defining the mitzvah of melikah (pinching) versus shechitah (slaughter) regarding the physical location and manipulation of the simanim (windpipe/esophagus).
• Nafka Mina:
  • Does melikah mandate moving the simanim to the nape (ocher)?
  • Does the phrase "valid for slaughter, invalid for melikah" imply that moving the simanim is a requirement for melikah but a disqualification (or redundancy) for shechitah?
  • The status of "ripping" (kri'ah)—is it a p’sul in shechitah that carries over to melikah?
• Primary Sources: Mishnah Chullin 20a; Chullin 20a (Gemara discussion on Rovim—sons of R. Hiyya); Zevachim 68a.

Text Snapshot

• Gemara 20a: "מאי איריא מולק אפילו שחט נמי... אי ס"ד דמחזיר דוקא."
• Nuance: The dialectic hinges on dikduk in the Mishna’s phrasing. If the Mishna identifies a specific kashrut boundary, does the reversal of the simanim create a symmetric disqualification? The term ma’hdir (moving/turning back) serves as the locus of the debate between the Rovim and R. Yannai.

Readings

The Perspective of the Rovim (Sons of R. Hiyya)

The Rovim posit that the mitzvah of melikah is performed by physically shifting the simanim behind the nape. In their view, the Mishna’s exclusionary language serves to define the ideal performance. They argue that because shechitah is focused on the throat (tzavar), and melikah is commanded at the nape (oref), the requirement to shift the simanim is the defining feature of the melikah act. If one were to slaughter at the nape, they argue it would be invalid precisely because the simanim were not brought to the oref in the required manner of melikah.

The Critique of R. Yannai and Rashi’s Synthesis

R. Yannai famously retorts, "Let the Rovim receive their response." He interprets the Mishna as a system of mutually exclusive boundaries. Rashi (ad loc. s.v. "Mai irya") explains this brilliance: If moving the simanim were the sole defining mitzvah of melikah, then the Mishna’s distinction would be logically incoherent. Rashi argues that the Mishna is speaking of a case where one did not move the simanim. Thus, the "valid for melikah" status of the nape is not dependent on the movement itself, but on the location. Rashi’s chiddush here is that melikah is defined by the place (the nape), and the requirement to shift the simanim is a hiddur or a procedural detail, not the essence that creates the hechsher.

Ritva’s Analysis of Shippui Rosh

Ritva (s.v. "U'k'd'Rav Ashi") refines the discussion regarding the "incline of the head." He notes that even those who argue for leniency in shechitah (such as the debate over cutting one-third of the trachea) agree that once one exits the tzavar into the shippui rosh (the slope of the head), the act is invalid. The chiddush here is the absolute nature of the makom (location); unlike the simanim themselves which have a degree of flexibility in shechitah, the makom of melikah is tethered to the oref with geometric precision.

Friction

The Strongest Kushya

The central tension: How can the Gemara argue that the Mishna excludes "drawing back and forth" (hagralah) for melikah when it is potentially valid for shechitah? If melikah is derived from the halakhot of shechitah, why does the melikah process demand a "single motion" (k’tzi’ah) while shechitah permits hagralah?

The Terutz

The Gemara suggests two paths:

1. Categorical Difference: Melikah is an act of avodah (Temple service), whereas shechitah is matir (a permission-granting act). The severity of melikah requires a singular, decisive motion to prevent the simanim from becoming "torn" (kru’ah)—a state that renders an olah offering invalid.
2. The "Ripping" Debate: As Rav Acha bar Rava notes, if one holds that the halakhot of bird shechitah are not d’oraita (Torah-level), then the gezeirat hakatuv regarding "ripping" (kri’ah) does not apply in the same way. The friction is resolved by recognizing that melikah is not merely "bird shechitah with a nail"; it is a distinct avodah that incorporates the simanim into a sacrificial framework.

Intertext

• Zevachim 68a: The Gemara there discusses the impurity of the bird olah. This is the critical cross-reference: if melikah were identical to shechitah, the impurity laws would collapse. The fact that an improperly performed melikah (e.g., using a knife) renders the bird tamei confirms that melikah exists in a different halachic category than shechitah.
• Shulchan Aruch, Yoreh Deah 18-20: While melikah is mostly restricted to the Beit HaMikdash context, the hilchot shechitah regarding the simanim (the requirement to sever the majority) remain the structural bedrock. The SA maintains the prohibition against kri’ah (ripping), aligning with the view that shechitah is a precision act, not a tearing act.

Psak/Practice

In contemporary practice, melikah is relegated to the le’atid lavo (future Temple). However, the meta-psak heuristic derived from this sugya is the "Location-Act Duality."

1. Heuristic: When performing a mitzva that has both a location requirement and a procedural requirement, the makom (place) is generally a me’akev (disqualifying factor if absent), whereas the procedural hiddur may be flexible depending on the underlying status of the act (i.e., avodah vs. hechsher).
2. Application: In shechitah, the precision of the cut is the ikkar. In melikah, the location of the oref is the absolute k’vod hamitzva.

Takeaway

Melikah is not just "slaughter by thumb"; it is a sacrificial geometry. The Rovim erred by seeking symmetry where the Torah demands a distinct, restricted avodah.