Leviticus 7:19-21

19Flesh that touches any unclean thing shall not be eaten. It shall be burned up with fire. All who are clean may eat flesh, 20but the person who eats of the flesh of the sacrifice of the Lord’s peace offerings awhile an uncleanness is on him, that person shall be cut off from his people. 21And if anyone touches an unclean thing, whether bhuman uncleanness or an cunclean beast or any dunclean detestable creature, and then eats some flesh from the sacrifice of the Lord’s peace offerings, that person shall be cut off from his people.”

Leviticus 11:24

24“And by these you shall become unclean. Whoever touches their carcass shall be unclean until the evening,

Leviticus 15:16

16 e“If a man has an emission of semen, he shall bathe his whole body in water and be unclean until the evening.
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