Leviticus 14:6-7

6He shall take the live bird with the cedarwood and the scarlet yarn and the hyssop, and dip them and the live bird in the blood of the bird that was killed over the fresh water. 7And he shall asprinkle it bseven times on him who is to be cleansed of the leprous disease. Then he shall pronounce him clean and shall clet the living bird go dinto the open field.
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