1st Samuel 24:9

6 And later, David was full of regret for cutting off Saul's skirt.

7 And David said to his men, Before the Lord, never let it be said that my hand was lifted up against my lord, the man of the Lord's selection, for the Lord's holy oil has been put on him.

8 So with these words David kept his servants back, and did not let them make an attack on Saul. And Saul got up and went on his way.

9 And after that David came out of the hollow rock, and crying after Saul said, My lord the king. And when Saul gave a look back, David went down on his face and gave him honour.

10 And David said to Saul, Why do you give any attention to those who say that it is my desire to do you wrong?

11 Look! you have seen today how the Lord gave you up into my hands even now in the hollow of the rocks: and some would have had me put you to death, but I had pity on you: for I said, Never will my hand be lifted up against my lord, who has been marked with the holy oil.

12 And see, my father, see the skirt of your robe in my hand: for the fact that I took off the skirt of your robe and did not put you to death is witness that I have no evil purpose, and I have done you no wrong, though you are waiting for my life to take it.