Leviticus 11:38-40

³⁸but if the seed has been soaked in water and one of their dead bodies falls on it, it is unclean for you.

³⁹If an animal that you are allowed to eat dies, anyone who touches the dead body will be unclean until the evening.

⁴⁰If you eat anything from the dead body you must wash your clothes and you will be unclean until the evening. If you pick up the dead body you must wash your clothes and you will be unclean until the evening.