Leviticus 11:37-39

New Revised Standard Version Catholic Edition

³⁷ If any part of their carcass falls upon any seed set aside for sowing, it is clean; ³⁸ but if water is put on the seed and any part of their carcass falls on it, it is unclean for you.

³⁹ If an animal of which you may eat dies, anyone who touches its carcass shall be unclean until the evening.