Exodus 29:13-15

New Revised Standard Version Catholic Edition

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. ¹⁴ But the flesh of the bull, and its skin, and its dung, you shall burn with fire outside the camp; it is a sin offering.

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