Exodus 29:14-18

But the flesh of the bullock, and his skin, and his dung, shalt thou burn with fire without the camp: it is a sin offering.

Thou shalt also take one ram; and Aaron and his sons shall put their hands upon the head of the ram.

And thou shalt slay the ram, and thou shalt take his blood, and sprinkle it round about upon the altar.

And thou shalt cut the ram in pieces, and wash the inwards of him, and his legs, and put them unto his pieces, and unto his head.

And thou shalt burn the whole ram upon the altar: it is a burnt offering unto the LORD: it is a sweet savour, an offering made by fire unto the LORD.