Leviticus 21:21-23

21No man from the descendants of Aaron the priest who has a physical flaw may step forward to present the Lord’s gifts; he has a physical flaw, so he must not step forward to present the food of his God.

22He may eat both the most holy and the holy food of his God,

23but he must not go into the veil-canopy or step forward to the altar because he has a physical flaw. Thus he must not profane my holy places, for I am the Lord who sanctifies them.’”