Leviticus 14:50-57

50He is to kill one of the birds in a clay pot over living water.

51Then he is to take the cedar wood, the hyssop, the scarlet and the living bird, and dip them into the blood of the slain bird as well as the living water, and sprinkle the house seven times.

52He shall cleanse the house with the blood of the bird, with the living water, with the living bird, the cedar wood, the hyssop and the scarlet.

53But he is to let the living bird go out of the city into the open field. So he is to make atonement for the house, and it will be clean.”

54This is the Torah for any mark of tza'arat—even for a scab,

55or the tza'arat in a garment or for a house

56or for a swelling, a scab, or a bright spot—

57to teach when it is unclean, and when it is clean. This is the Torah of tza'arat.