Leviticus 4:35

Amplified Bible

³⁵ 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.^(A)