I Samuel 26:8

8 Abishai said to David, "Today God has delivered your enemy into your hands. Now let me pin him to the ground with one thrust of the spear; I won't strike him twice."

8 Then said Abishai to David, God hath delivered up thine enemy into thy hand this day: now therefore let me smite him, I pray thee, with the spear to the earth at one stroke, and I will not smite him the second time.