Leviticus 21:18-21

For any man whose body is damaged may not come near: one who is blind, or has not the use of his legs, or one who has a broken nose or any unnatural growth, Or a man with broken feet or hands, Or one whose back is bent, or one who is unnaturally small, or one who has a damaged eye, or whose skin is diseased, or whose sex parts are damaged; No man of the offspring of Aaron whose body is damaged in any way may come near to give the fire offerings of the Lord: he is damaged, he may not come near to make the offerings.