Leviticus 14:7

14:7 and sprinkle it seven times on the one being cleansed from the disease, pronounce him clean, and send the live bird away over the open countryside.

Leviticus 14:16

14:16 Then the priest is to dip his right forefinger into the olive oil that is in his left hand, and sprinkle some of the olive oil with his finger seven times before the Lord.