Leviticus 11:39-41

New Revised Standard Version, Anglicised Catholic Edition

³⁹ If an animal of which you may eat dies, anyone who touches its carcass shall be unclean until the evening. ⁴⁰ Those who eat of its carcass shall wash their clothes and be unclean until the evening; and those who carry the carcass shall wash their clothes and be unclean until the evening.

⁴¹ All creatures that swarm upon the earth are detestable; they shall not be eaten.