Exodus 29:10-15

10“You are to present the bull at the front of the tent of meeting, and Aaron and his sons are to put their hands on the head of the bull.

11You are to kill the bull before the Lord at the entrance to the tent of meeting

12and take some of the blood of the bull and put it on the horns of the altar with your finger; all the rest of the blood you are to pour out at the base of the altar.

13You are to take all the fat that covers the entrails, and the lobe that is above the liver, and the two kidneys and the fat that is on them, and burn them on the altar.

14But the meat of the bull, its skin, and its dung you are to burn up outside the camp. It is the purification offering.

15“You are to take one ram, and Aaron and his sons are to lay their hands on the ram’s head,