Exodus 29:10-11

29:10 “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. 29:11 You are to kill the bull before the Lord at the entrance to the tent of meeting

Exodus 29:3

29:3 You are to put them in one basket and present them in the basket, along with the bull and the two rams.

Exodus 29:12

29:12 and 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.

Exodus 29:14

29:14 But the meat of the bull, its skin, and its dung you are to burn up outside the camp. It is the purification offering.