1 Samuel 24:4-7

4And David's men said to him, Behold the day of which Jehovah said to thee, Behold, I will give thine enemy into thy hand, that thou mayest do to him as it shall seem good to thee. And David arose, and cut off the skirt of Saul's robe secretly.

5And it came to pass afterwards that David's heart smote him, because he had cut off Saul's skirt.

6And he said to his men, Jehovah forbid that I should do this thing to my master, Jehovah's anointed, to stretch forth my hand against him, for he is the anointed of Jehovah.

7And 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.