Leviticus 4:8-10, 26, 31, 35

He shall remove from it all the fat of the bull of the sin offering: the fat that covers the entrails, and all the fat which is on the entrails, and the two kidneys with the fat that is on them, which is on the loins, and the lobe of the liver, which he shall remove with the kidneys (just as it is 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.

All its fat he shall offer up in smoke on the altar as in the case of the fat of the sacrifice of peace offerings. Thus the priest shall make atonement for him in regard to his sin, and he will be forgiven.

Then he shall remove all its fat, just as the fat was removed from the sacrifice of peace offerings; and the priest shall offer it up in smoke on the altar for a soothing aroma to the LORD. Thus the priest shall make atonement for him, and he will be forgiven.

Then he shall remove all its fat, just as the fat of the lamb is removed from the sacrifice of the peace offerings, and the priest shall offer them up in smoke on the altar, on the offerings by fire to the LORD. Thus the priest shall make atonement for him in regard to his sin which he has committed, and he will be forgiven.