1 Samuel 24:3-8

3And he came to the sheepcotes by the way, where was a cave; and Saul went in to cover his feet: and David and his men remained in the sides of the cave.

4And the men of David said unto him, Behold the day of which Yhwh said unto thee, Behold, I will deliver thine enemy into thine hand, that thou mayest do to him as it shall seem good unto thee. Then David arose, and cut off the skirt of Saul’s robe privily.1

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

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

7So David stayed his servants with these words, and suffered them not to rise against Saul. But Saul rose up out of the cave, and went on his way.2

8David also arose afterward, and went out of the cave, and cried after Saul, saying, My lord the king. And when Saul looked behind him, David stooped with his face to the earth, and bowed himself.