Exodus 29:31-33

31“And you shall take the ram of the consecration and boil its flesh in the holy place.

32Then Aaron and his sons shall eat the flesh of the ram, and the bread that is in the basket, by the door of the tabernacle of meeting.

33They shall eat those things with which the atonement was made, to consecrate and to sanctify them; but an outsider shall not eat them, because they are holy.