Leviticus 11:36-40

36A spring, however, or a cistern for collecting water remains clean, but anyone who touches one of these carcasses is unclean. 37If a carcass falls on any seeds that are to be planted, they remain clean.

38But if water has been put on the seed and a carcass falls on it, it is unclean for you. 39“ ‘If an animal that you are allowed to eat dies, anyone who touches its carcass will be unclean till evening.

40Anyone who eats some of its carcass must wash their clothes, and they will be unclean till evening. Anyone who picks up the carcass must wash their clothes, and they will be unclean till evening.