Zevachim 64A

שאם היזה ולא מיצה ⁠– כשירה; ובלבד שיתן מחוט הסיקרא ולמטה מדם הנפש.

because if he sprinkled the blood but did not squeeze out the rest of it, it is still valid, provided that he places some of the blood of the soul anywhere on the altar from the red line and below. This version of the baraita states that the offering is valid no matter where on the altar its blood was squeezed out; but it is essential that blood is sprinkled on the lower half of the altar.

שלשה דברים כו׳. חטאת העוף ⁠– הא דאמרן.

§ The Mishnah teaches that there were 3 matters for which the portion of the southwest corner below the red line served as the proper location: The sacrificing of a bird sin offering, and the bringing of the meal offerings near the altar, and pouring the remaining blood. The Talmud cites sources to prove that each of these 3 matters was performed at the southwest corner: The source with regard to the bird sin offering is that which we said earlier (63b), that it is derived from a comparison to meal offerings.

הגשות ⁠– דכתיב: ״והגישה אל פני המזבח״. שירי הדם ⁠– דכתיב: ״ואת כל דם הפר ישפך אל יסוד המזבח״.

The source for bringing meal offerings near the altar at the southwest corner is derived from that which is written: “And he should bring it to the front of the altar.” The source for pouring the remaining blood at the southwest corner of the altar is as it is written: “And all the remaining blood of the bull he should pour out at the base of the altar” (Leviticus 4:7), which the Talmud derives to be referring to the southwest corner (see 53a).