Leviticus 16:19

16:19 Then he is to sprinkle on it some of the blood with his finger seven times, and cleanse and consecrate it from the impurities of the Israelites.

Leviticus 16:14

16:14 Then he is to take some of the blood of the bull and sprinkle it with his finger on the eastern face of the atonement plate, and in front of the atonement plate he is to sprinkle some of the blood seven times with his finger.