Leviticus 22:2-8

2Speak unto Aaron, and to his sons, that they separate themselves from the holy things of the children of Israel, and that they profane not my holy name in the things that they hallow unto me: I am Jehovah.

3Say unto them, Every one of all your seed, throughout your generations, that approacheth 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.

4Whatsoever man of the seed of Aaron is a leper, or hath a flux, he shall not eat of the holy things, until he is clean. And he that toucheth any one that is unclean by a dead person, or a man whose seed of copulation hath passed from him;

5or a man that toucheth any crawling thing whereby he becometh unclean, or a man by whom he may become unclean, whatever may be his uncleanness,

6— a person that toucheth any such shall be unclean until even, and shall not eat of the holy things; but he shall bathe his flesh with water,

7and when the sun goeth down, he shall be clean, and may afterwards eat of the holy things; for it is his food.

8Of a dead carcase and what is torn shall he not eat, to make himself unclean therewith: I am Jehovah.