Leviticus 14:2-4

14:2 “This is the law of the diseased person on the day of his purification, when he is brought to the priest. 14:3 The priest is to go outside the camp and examine the infection. If the infection of the diseased person has been healed, 14:4 then the priest will command that two live clean birds, a piece of cedar wood, a scrap of crimson fabric, and some twigs of hyssop be taken up for the one being cleansed.