Deuteronomy 13:16-17

16And all the spoil of it shalt thou gather into the midst of the open place thereof, and shalt burn the city with fire, and all the spoil thereof, wholly to Jehovah thy 1God; and it shall be a heap for ever; it shall not be built again.

17And thou shalt not let anything cleave to thy hand of the devoted thing; that Jehovah may turn from the fierceness of his anger, and shew thee mercy, and have compassion upon thee, and multiply thee, as he hath sworn unto thy fathers;