Exodus 29:15

13You shall take all the fat that covers the innards, the cover of the liver, the two kidneys, and the fat that is on them, and burn them on the altar.

14But the meat of the bull, and its skin, and its dung, you shall burn with fire outside of the camp. It is a sin offering.

15“You shall also take the one ram, and Aaron and his sons shall lay their hands on the head of the ram.

16You shall kill the ram, and you shall take its blood, and sprinkle it around on the altar.

17You shall cut the ram into its pieces, and wash its innards, and its legs, and put them with its pieces, and with its head.