Leviticus 14:48-53

48“But when the priest comes and examines it, if the contamination has not spread in the house after it was replastered, he is to pronounce the house clean because the contamination has disappeared.

49He is to take two birds, cedar wood, scarlet yarn, and hyssop to purify the house,

50and he is to slaughter one of the birds over a clay pot containing fresh water.

51He will take the cedar wood, the hyssop, the scarlet yarn, and the live bird, dip them in the blood of the slaughtered bird and the fresh water, and sprinkle the house seven times.

52He will purify the house with the blood of the bird, the fresh water, the live bird, the cedar wood, the hyssop, and the scarlet yarn.

53Then he is to release the live bird into the open countryside outside the city. In this way he will make atonement for the house, and it will be clean.