Leviticus 11:39-41

Amplified Bible

³⁹ ‘If one of the animals that you may eat dies [of natural causes], whoever touches its carcass becomes unclean until the evening. ⁴⁰ And whoever eats some of its meat shall wash his clothes, and be unclean until evening; also whoever picks up its carcass shall wash his clothes, and be unclean until the evening.

⁴¹ ‘Now everything that swarms on the ground is detestable; it is not to be eaten.