Leviticus 1:7

5And he shall kill the bullock before the LORD: and the priests, Aaron’s sons, shall bring the blood, and sprinkle the blood round about upon the altar that is by the door of the tabernacle of the congregation.

6And he shall flay the burnt offering, and cut it into his pieces.

7And the sons of Aaron the priest shall put fire upon the altar, and lay the wood in order upon the fire:

8And the priests, Aaron’s sons, shall lay the parts, the head, and the fat, in order upon the wood that is on the fire which is upon the altar:

9But his inwards and his legs shall he wash in water: and the priest shall burn all on the altar, to be a burnt sacrifice, an offering made by fire, of a sweet savour unto the LORD.