Leviticus 5:2-3 ▼

2 Or if someone touches anything unclean —a carcass of an unclean wild animal, or unclean livestock, or an unclean swarming creature —without being aware of it, he is unclean and incurs guilt.

3 Or if he touches human uncleanness —any uncleanness by which one can become defiled —without being aware of it, but later recognizes it, he incurs guilt.