Leviticus 22:2-3, 11-13

Speak unto Aaron and to his sons, that they separate themselves from the holy things of the children of Israel, which they hallow unto me, and that they profane not my holy name: I am Jehovah. Say unto them, Whosoever he be of all your seed throughout your generations, that approacheth unto the holy things, which the children of Israel hallow unto Jehovah, having his uncleanness upon him, that soul shall be cut off from before me: I am Jehovah.

But if a priest buy any soul, the purchase of his money, he shall eat of it; and such as are born in his house, they shall eat of his bread. And if a priest’s daughter be married unto a stranger, she shall not eat of the heave-offering of the holy things. But if a priest’s daughter be a widow, or divorced, and have no child, and be returned unto her father’s house, as in her youth, she shall eat of her father’s bread: but there shall no stranger eat thereof.