Leviticus 4:3, 21, 31, 35

if the anointed priest shall sin so as to bring guilt on the people, then let him offer for his sin, which he hath sinned, a young bullock without blemish unto Jehovah for a sin-offering.

And he shall carry forth the bullock without the camp, and burn it as he burned the first bullock: it is the sin-offering for the assembly.

And all the fat thereof shall he take away, 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 savor unto Jehovah; and the priest shall make atonement for him, 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.