Leviticus 6:8-9

⁸And he shall separate therefrom his handful lof the flour of the mincha and of its oil, and all the frankincense that is upon the mincha, and burn it at the altar as its memorial to be accepted with favour before the Lord.

⁹And the remainder of it may Aharon and his sons eat, unleavened shall it be eaten in the holy place, in the court of the tabernacle of ordinance shall they eat it.