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

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, 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 (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.

And he shall offer all its fat up in smoke on the altar like the fat from the sacrifice of peace offerings; so 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 as a sweet and soothing aroma to the LORD. In this way 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 it up in smoke on the altar, on the offerings by fire to the LORD. In this way the priest shall make atonement for him in regard to the sin which he has committed, and he will be forgiven. [Heb 9:13, 14]