Exodus 29:15-18

15"Then you shall take one of the rams, and Aaron and his sons shall lay their hands on the head of the ram,

16and you shall kill the ram and shall take its blood and throw it against the sides of the altar.

17Then you shall cut the ram into pieces, and wash its entrails and its legs, and put them with its pieces and its head,

18and burn the whole ram on the altar. It is a burnt offering to the Lord. It is a pleasing aroma, a food offering to the Lord.