Leviticus 14:4-6, 49-52

then shall the priest command to take for him that is to be cleansed two living clean birds, and cedar wood, and scarlet, and hyssop: and the priest shall command to kill one of the birds in an earthen vessel over running water. As for the living bird, he shall take it, and the cedar wood, and the scarlet, and the hyssop, and shall dip them and the living bird in the blood of the bird that was killed over the running water

And he shall take to cleanse the house two birds, and cedar-wood, and scarlet, and hyssop: and he shall kill one of the birds in an earthen vessel over running water: and he shall take the cedar-wood, and the hyssop, and the scarlet, and the living bird, and dip them in the blood of the slain bird, and in the running water, and sprinkle the house seven times: and he shall cleanse the house with the blood of the bird, and with the running water, and with the living bird, and with the cedar-wood, and with the hyssop, and with the scarlet