1 Samuel 24:3-5
3
He came to the sheep pens by the way, where there was a cave; and Saul went in to relieve himself. Now David and his men were abiding in the innermost parts of the cave.
4
The men of David said to him, "Behold, the day of which Yahweh said to you, 'Behold, I will deliver your enemy into your hand, and you shall do to him as it shall seem good to you.'" Then David arose, and cut off the skirt of Saul's robe secretly.
5
It happened afterward, that David's heart struck him, because he had cut off Saul's skirt.