Leviticus 4:8-19, 26, 31

And all the fat of the bull of the sin offering he shall remove from it, the fat that covers the entrails and all the fat that is on the entrails and the two kidneys with the fat that is on them at the loins and the long lobe of the liver that he shall remove with the kidneys (just as these are taken from the ox of the sacrifice of the peace offerings); and the priest shall burn them on the altar of burnt offering. But the skin of the bull and all its flesh, with its head, its legs, its entrails, and its dung— all the rest of the bull—he shall carry outside the camp to a clean place, to the ash heap, and shall burn it up on a fire of wood. On the ash heap it shall be burned up. “If the whole congregation of Israel sins unintentionally and the thing is hidden from the eyes of the assembly, and they do any one of the things that by the LORD’s commandments ought not to be done, and they realize their guilt, when the sin which they have committed becomes known, the assembly shall offer a bull from the herd for a sin offering and bring it in front of the tent of meeting. And the elders of the congregation shall lay their hands on the head of the bull before the LORD, and the bull shall be killed before the LORD. Then the anointed priest shall bring some of the blood of the bull into the tent of meeting, and the priest shall dip his finger in the blood and sprinkle it seven times before the LORD in front of the veil. And he shall put some of the blood on the horns of the altar that is in the tent of meeting before the LORD, and the rest of the blood he shall pour out at the base of the altar of burnt offering that is at the entrance of the tent of meeting. And all its fat he shall take from it and burn on the altar.

And all its fat he shall burn on the altar, like the fat of the sacrifice of peace offerings. So the priest shall make atonement for him for his sin, and he shall be forgiven.

And all its fat he shall remove, as the fat is removed from the peace offerings, and the priest shall burn it on the altar for a pleasing aroma to the LORD. And the priest shall make atonement for him, and he shall be forgiven.