Leviticus 14:47-49

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 plastered; 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: