Leviticus 14:49-53

⁴⁹And he shall take, to purge the house from the defilement, two birds, and cedar-wood, and scarlet, and hyssop;

⁵⁰and he shall kill one bird in an earthen vessel over running water;

⁵¹and he shall take the cedar-wood and the hyssop and the scarlet, and the living bird, and dip them in the blood of the bird that was killed, and in the running water, and sprinkle the house seven times;

⁵²and he shall purge the house from the defilement 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;

⁵³and he shall let the living bird loose out of the city into the open field; and he shall make atonement for the house, and it is clean.