Exodus 29:13-15

Revised Standard Version Catholic Edition

¹³ And 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 burn them upon 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 upon the head of the ram,