And he shall take to cleanse the house two birds, and cedar wood, and scarlet, and hyssop:
Hide a stone among stones and a man among men.General Rokurota Makabe, The Hidden Fortress
And he shall kill the one of the birds in an earthen vessel over running water:Leviticus 14:50 KJV
And if the priest shall come in, and look upon it, and, behold, the plague hath not spread in the house, after the house was plaistered: then the priest shall pronounce the house clean, because the plague is healed.Leviticus 14:48 KJV