Leviticus 4:8-10

Amplified Bible

⁸ He shall remove all the fat from the bull of the sin offering—the fat that covers the entrails, and all the fat which is on the entrails, ⁹ and the two kidneys with the fat that is on them at the loins, and the lobe of the liver, which he shall remove with the kidneys ¹⁰ (just as these are removed from the ox of the sacrifice of peace offerings), and the priest is to offer them up in smoke on the altar of burnt offering.