Leviticus 14:7, 16, 51

And he shall sprinkle it seven times on him who is to be cleansed of the leprous disease. Then he shall pronounce him clean and shall let the living bird go into the open field.

and dip his right finger in the oil that is in his left hand and sprinkle some oil with his finger seven times before the LORD.

and shall take the cedarwood and the hyssop and the scarlet yarn, along with the live bird, and dip them in the blood of the bird that was killed and in the fresh water and sprinkle the house seven times.