Leviticus 14:47-49

⁴⁷He who lies down in the house shall wash his clothes; and he who eats in the house shall wash his clothes.

⁴⁸“If the priest shall come in, and examine it, and behold, the plague hasn’t spread in the house, after the house was plastered, then the priest shall pronounce the house clean, because the plague is healed.

⁴⁹To cleanse the house he shall take two birds, cedar wood, scarlet, and hyssop.