Lev 14:48-53

48If the priest comes and makes an inspection, and the disease has not spread in the house after the house was plastered, the priest shall pronounce the house clean; the disease is healed.49For the cleansing of the house he shall take two birds, with cedarwood and crimson yarn and hyssop,50and shall slaughter one of the birds over fresh water in an earthen vessel,51and shall take the cedarwood and the hyssop and the crimson yarn, along with the living bird, and dip them in the blood of the slaughtered bird and the fresh water, and sprinkle the house seven times.52Thus he shall cleanse the house with the blood of the bird, and with the fresh water, and with the living bird, and with the cedarwood and hyssop and crimson yarn;53and he shall let the living bird go out of the city into the open field; so he shall make atonement for the house, and it shall be clean.