Leviticus [Pertaining to Levites] 11:38-40

³⁸But if water is put on the seed, and part of their carcass falls on it, it is unclean to you.

³⁹“‘If any animal, of which you may eat, dies; he who touches its carcass shall be unclean until the evening.

⁴⁰He who eats of its carcass shall wash his clothes, and be unclean until the evening. He also who carries its carcass shall wash his clothes, and be unclean until the evening.