Leviticus 22:9-11

⁹The priests must follow my instructions, or they will be guilty of sin and could die for profaning me. I am Yahweh who makes them holy.

¹⁰No one outside the priest's family, including guests of a priest or his hired servants, may eat anything that is holy.

¹¹But if a priest buys any slave with his own money, that slave may eat from the things set apart to Yahweh. The priest's family members and slaves born in his house, they also may eat with him from those things.