Leviticus 14:1-8

The LORD said to Moses, “These are the teachings for the time at which people who had a harmful skin disease are made clean. “The person shall be brought to the priest, and the priest must go outside the camp and look at the one who had the skin disease. If the skin disease is healed, the priest will command that two living, clean birds, a piece of cedar wood, a piece of red string, and a hyssop plant be brought for cleansing the person with the skin disease. “The priest must order one bird to be killed in a clay bowl containing fresh water. Then he will take the living bird, the piece of cedar wood, the red string, and the hyssop; all these he will dip into the blood of the bird that was killed over the fresh water. The priest will sprinkle the blood seven times on the person being cleansed from the skin disease. He must announce that the person is clean and then go to an open field and let the living bird go free. “The person to be cleansed must wash his clothes, shave off all his hair, and bathe in water. Then he will be clean and may go into the camp, though he must stay outside his tent for the first seven days.