Leviticus 4:20, 26, 35

Thus shall he do with the bullock; as he did with the bullock of the sin-offering, so shall he do with this; and the priest shall make atonement for them, and they shall be forgiven.

And all the fat thereof shall he burn upon the altar, as the fat of the sacrifice of peace-offerings; and the priest shall make atonement for him as concerning his sin, and he shall be forgiven.

And all the fat thereof shall he take away, as the fat of the lamb is taken away from the sacrifice of peace-offerings; and the priest shall burn them on the altar, upon the offerings of Jehovah made by fire; and the priest shall make atonement for him as touching his sin that he hath sinned, and he shall be forgiven.