Leviticus 4:20; Leviticus 4:26

20 'He shall also do with the bull just as he did with the bull of the sin offering; thus he shall do with it. So the priest shall make atonement for them, and they will be forgiven.

26 '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.