Leviticus 14:48-50

Amplified Bible

⁴⁸ “But if the priest comes in and inspects it and the mark has not spread in the house after the house has been replastered, he shall pronounce the house clean because the mark has not reappeared. ⁴⁹ To cleanse the house then, he shall take two birds and cedar wood and scarlet string and hyssop; ⁵⁰ and he shall kill one of the birds in an earthenware container over running water,