Leviticus 24:9-10

⁹And they shall be for Aaron and his sons, and they shall eat them in the holy place: for this is their most holy portion of the offerings made to the Lord, a perpetual statute.

¹⁰And there went forth a son of an Israelitish woman, and he was son of an Egyptian man among the sons of Israel; and they fought in the camp, the son of the Israelitish woman, and a man who was an Israelite.