Leviticus 2:9-11

New Revised Standard Version Catholic Edition

⁹ The priest shall remove from the grain offering its token portion and turn this into smoke on the altar, an offering by fire of pleasing odor to the Lord. ¹⁰ And what is left of the grain offering shall be for Aaron and his sons; it is a most holy part of the offerings by fire to the Lord.

¹¹ No grain offering that you bring to the Lord shall be made with leaven, for you must not turn any leaven or honey into smoke as an offering by fire to the Lord.