Zevachim 6:5 - 6:6

עלה בכבש – since the burnt-offering of the fowl is done above, for it is not written [in Scripture] regarding the burnt-offering of the fowl/bird is in the base of the altar, but rather, only the sin-offering of the fowl/bird. But with the cattle it is the opposite, for the sin-offering of cattle is performed above [the red line] as it is written regarding it (Leviticus 4:18): “[Some of the blood he shall put] on the horns of the altar [which is before the LORD in the Tent of Meeting],” and the burnt offering of the cattle is below [the red line], as it is written (Leviticus 4:18): “ [and all the rest of the blood he shall pour out] at the base of the altar of burnt offering, [which is at the entrance of the Tent of Meeting],” [Scripture] assigned the base [of the altar] to the burnt-offering.

בא לו לקרן דרומית מזרחית – because it is close to the place of the ashes where they cast the crop of the birds and the down-covered skin [with the entrails that go along with it].

ממול ערפה – opposite one who sees its neck. And it is the back of the neck. But even though it doesn’t say regarding a burnt-offering, “opposite the neck,” we learned from it, opposite the neck from the sin-offering.

ומבדיל – he severs two organs, from what is written in the sin-offering of the fowl/bird (Leviticus 1:17): “[The priest shall tear it open by its wings,] without severing it, [and turn it into smoke on the altar,” we learned that with the burnt-offering of a fowl/bird, he severs it.

והקיף בית מליקתו למזבח – he offers it up and presses the place in the bird’s neck to the wall of the altar in order that the blood will drain out.

ספגו במלח – the language of drawn water and taking, like absorbing/receiving the forty [i.e., thirty-nine] lashes. Even here, he places upon it salt in order that the head will stretch and receive the salt. Another explanation: the word "ספגו" with a letter ג' is like סופק with a letter ק' (i.e., to supply an opportunity, to be sufficient) , the language of (Numbers 24:10): “[Engraged at Balaam,] Balak struck his hands together.”

מוראה – the bird’s crop.

נוצה – he cuts through it like a sort of aperture and takes all the skin and the feathers/down (i.e., plumage) that is opposite the bird’s crop with the crop and casts it off.

שסע – [tears open] the bird between the wings but he does not sever it.

הבדיל בחטאת – that he pinched the bird’s neck with his finger nail two organs with the sin-offering.

או לא הבדיל בעולה – that he pinched with it one organ.

פסול – for every kind of difference prior to the [Divine] service with the blood is invalid.

ולא מיצה דם הגוף פסולה – for the essence of the blood is in the body, where it is found.