Leviticus 11:36-38

Amplified Bible

³⁶ Nevertheless a spring or a cistern (reservoir) collecting water shall be clean; but whoever touches one of these carcasses shall be unclean. ³⁷ If a part of their carcass falls on any seed for sowing which is to be sown, it is clean; ³⁸ but if water is put on the seed and a part of their carcass falls on it, it is unclean to you.