Leviticus 21:21-23

21If a descendant of the priest Aaron has a physical defect, he must never bring sacrifices by fire to the Lord. He has a defect. He must never bring food to offer to God.

22He may eat the food of his God—what is holy and what is very holy.

23However, he must never come up to the canopy or to the altar, since he has a physical defect. He must never dishonor the holy places because I, the Lord, set them apart as holy.”