Leviticus 14:53

50 And put one of the birds to death in a vessel of earth over flowing water;

51 And take the cedar-wood and the hyssop and the red thread and the living bird and put them in the blood of the dead bird and in the flowing water, shaking it over the house seven times.

52 And he will make the house clean with the blood of the bird and the flowing water and with the living bird and with the cedar-wood and the hyssop and the red thread.

53 But he will let the living bird go out of the town into the open country; so he will take away sin from the house and it will be clean.

54 This is the law for all signs of the leper's disease and for skin diseases;

55 And for signs of disease in clothing, or in a house;

56 And for a growth or a bad place or a bright mark on the skin;