Vayikra 5:1-2

Orthodox Jewish Bible

5 And if a nefesh sin, after he hears a public adjuration to give testimony, and he is an ed (witness), whether he hath seen or known of it; if he does not utter it, then he shall bear his avon (iniquity).

² Or if a nefesh touch anything tamei (unclean), whether it be a nivlat chayyah teme’ah (carcass of an unclean beast), or a nivlat behemah teme’ah (carcass of unclean livestock), or the nivlat sheretz tamei (carcass of unclean creeping things), and if it be hidden from him; he also shall be tamei, and guilty.