Leviticus 6:8-9

⁸And he shall take from it a handful of the fine flour of the sacrifice with its oil, and with all its frankincense, which are upon the sacrifice; and he shall offer up on the altar a burnt offering as a sweet-smelling savor, a memorial of it to the Lord.

⁹And Aaron and his sons shall eat that which is left of it: it shall be eaten without leaven in a holy place, they shall eat it in the court of the tabernacle of witness.