Leviticus 11:37-39 New International Version (NIV)

37. If a carcass falls on any seeds that are to be planted, they remain clean.

38. But 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.

Leviticus 11