Leviticus 5:2-3

Modern English Version

² Or when a person touches any ceremonially unclean thing, whether it is a carcass of unclean wildlife, or a carcass of an unclean domesticated animal, or the carcass of an unclean crawling thing, and he did not realize it, then he has become unclean and guilty.

³ Or when he touches human uncleanness, any uncleanness by which he may become ceremonially unclean, and he did not realize it, when he realizes it, then he shall be guilty.