Leviticus 11:35-37

New King James Version

³⁵ And everything on which a part of any such carcass falls shall be unclean; whether it is an oven or cooking stove, it shall be broken down; for they are unclean, and shall be unclean to you. ³⁶ Nevertheless a spring or a cistern, in which there is plenty of water, shall be clean, but whatever touches any such carcass becomes unclean. ³⁷ And if a part of any such carcass falls on any planting seed which is to be sown, it remains clean.