Leviticus

⁴⁴then the priest shall come in and look, and, behold, if the plague be spread in the house, it is a fretting leprosy in the house: it is unclean. ⁴⁵And he shall break down the house, the stones of it, and the timber thereof, and all the mortar of the house; and he shall carry them forth out of the city into an unclean place. ⁴⁶Moreover he that goeth into the house all the while that it is shut up shall be unclean until the even. ⁴⁷And he that lieth in the house shall wash his clothes; and he that eateth in the house shall wash his clothes. ⁴⁸And if the priest shall come in, and look, and, behold, the plague hath not spread in the house, after the house was plaistered; then the priest shall pronounce the house clean, because the plague is healed. ⁴⁹And he shall take to cleanse the house two birds, and cedar wood, and scarlet, and hyssop: ⁵⁰and he shall kill one of the birds in an earthen vessel over running water: