Leviticus 4:32-35

And if he bring a lamb as his oblation for a sin-offering, he shall bring it a female without blemish. And he shall lay his hand upon the head of the sin-offering, and kill it for a sin-offering in the place where they kill the burnt-offering. And the priest shall take of the blood of the sin-offering with his finger, and put it upon the horns of the altar of burnt-offering; and all the blood thereof shall he pour out at the base of the altar. 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.