Sefer HaChinuch ספר החינוך

The commandment of the procedure of the burnt-offering: To execute the burnt-offering according to its statue, as it is stated (Leviticus 1:3), “If his sacrifice is a burnt-offering, etc.” — as it is written in the section.

What I have written in the commandment of the Temple about the matter of sacrifices in the Order on Vayikchu Li (Sefer HaChinukh 95) is from the roots of the commandment.

From the laws of the commandment is that which they, may their memory be blessed, said about the procedure of the burnt-offering that it was executed thus: We slaughter the beast in the [Temple] yard — and the slaughter is fit even with non-priests, but from the reception of the blood and onward, it is a commandment of the priesthood. And the priest would sprinkle the blood and flay it and dissect the limbs whole — as it is written (Leviticus 1:6), “into sections,” and they, may their memory be blessed, explained (Chullin 11:1), “And not sections into sections.” And when he dissects [it], he removes the sciatic nerve from the thigh, and incinerates all of the sections on top of the altar. And the wool on the heads of the sheep, the hair of the beards of the male goats, the bones, the tendons, the horns and the hooves — when they are attached — we incinerate it all, as it is stated (Leviticus 1:9), “and the priest incinerates it all.” [But if] they were separated, they do not go up, as it is stated (Deuteronomy 12:26), “And you shall execute your burnt-offerings, the meat and the blood.”

And how was the order of the dissection (see Mishnah Tamid 4); how was the rinsing of the intestines; with how many people they would move the limbs to the altar — that they, may their memory be blessed, said (Yoma 26b) that the sheep is with six, the ox with twenty-four for communal burnt-offerings and less [for] burnt-offerings of individuals. And the content of the burnt-offering of fowl — how it was done — and the rest of its details are elucidated in Zevachim.

And [it] is practiced at the time of the [Temple] by the males of the priesthood. And a priest that transgressed and did not execute it according to this order has violated a positive commandment.