Leviticus 2:9-11

⁹And the priest shall approach the altar, and shall take away from the sacrifice a memorial of it, and the priest shall place it on the altar: a burnt offering, a smell of sweet savour to the Lord.

¹⁰And that which is left of the sacrifice shall be for Aaron and his sons, most holy from the burnt-offerings of the Lord.

¹¹Ye shall not leaven any sacrifice which ye shall bring to the Lord; for as to any leaven, or any honey, ye shall not bring of it to offer a gift to the Lord.