Leviticus 4:32

And he shall take away all the fat thereof, as the fat is taken away from off the sacrifice of peace offerings; and the priest shall burn it upon the altar for a sweet savour unto the LORD; and the priest shall make an atonement for him, and it shall be forgiven him.

And he shall lay his hand upon the head of the sin offering, and slay it for a sin offering in the place where they kill the burnt offering.