Leviticus 3:9-11

New Catholic Bible

⁹ From the peace offering he shall offer up the following as a burnt offering to the Lord: the fat, the entire fat of the tail, cutting it away from the end of the backbone, the fat around the entrails and all that is above them, ¹⁰ the two kidneys with their fat and the fat around the loins, and the lobe of the liver that he will detach along with the kidneys. ¹¹ Then the priest shall burn them on the altar as food offered up to the Lord by fire.