1 Samuel 24:7, 10-11

So David checked his men with these words, and suffered them not to rise against Saul. And Saul rose up out of the cave, and went on his way.

Behold, this day thine eyes have seen how that Jehovah had delivered thee to-day into my hand in the cave: and some bade me kill thee; but mine eye spared thee; and I said, I will not put forth my hand against my lord; for he is Jehovah’s anointed. Moreover, my father, see, yea, see the skirt of thy robe in my hand; for in that I cut off the skirt of thy robe, and killed thee not, know thou and see that there is neither evil nor transgression in my hand, and I have not sinned against thee, though thou huntest after my life to take it.