Leviticus 5:2

The soul that will have touched anything unclean, either that which has been killed by a beast, or that which has died on its own, or any other creeping thing, and will have forgotten its uncleanness, he is guilty and has committed a transgression

Other versions

King James Version

Or if a soul touch any unclean thing, whether it be a carcase of an unclean beast, or a carcase of unclean cattle, or the carcase of unclean creeping things, and if it be hidden from him; he also shall be unclean, and guilty.

English Standard Version

or if anyone touches an unclean thing, whether a carcass of an unclean wild animal or a carcass of unclean livestock or a carcass of unclean swarming things, and it is hidden from him and he has become unclean, and he realizes his guilt;

New International Version

"'Or if a person touches anything ceremonially unclean-whether the carcasses of unclean wild animals or of unclean livestock or of unclean creatures that move along the ground-even though he is unaware of it, he has become unclean and is guilty.