Leviticus 14:7, 16, 51

And he shall sprinkle it seven times on him who is to be cleansed from the leprosy, and shall pronounce him clean, and shall let the living bird loose in the open field.

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

and he shall take the cedar wood, the hyssop, the scarlet, and the living bird, and dip them in the blood of the slain bird and in the running water, and sprinkle the house seven times.