English: Rav Shimi bar Ashi: “And he shall slaughter” — slaughter by a non-Kohen is valid. As it is stated: “…and the sons of Aharon the Kohanim shall bring the blood” — from receiving the blood onward is the mitzvah of the priesthood. “And he shall lean his hand… and slaughter” teaches that slaughter is valid by a non-Kohen.
In the sugya: The verse shifts subjects: singular veshachat, then plural Kohanim who bring the blood. That shift marks the boundary. Shechitah can be done by a zar; from kabbalah of the blood onward, the avodah is kehunah only.
Type of Learning
Subject change in the verse — singular slaughterer vs plural Kohanim marks where kehunah begins.
What Is Learned
Shechitah of kodashim is valid when done by a zar. From kabbalah of the blood onward, the avodah is for Kohanim only. The Torah’s change of grammatical subject is the boundary marker between open shechitah and priestly blood service.