Exodus 29:11-13

New Revised Standard Version Catholic Edition

¹¹ and you shall slaughter the bull before the Lord, at the entrance of the tent of meeting, ¹² and shall take some of the blood of the bull and put it on the horns of the altar with your finger, and all the rest of the blood you shall pour out at the base of the altar. ¹³ You shall take all the fat that covers the entrails, and the appendage of the liver, and the two kidneys with the fat that is on them, and turn them into smoke on the altar.