Now it happened afterward that David's heart troubled him because he had cut Saul's robe.
1 Samuel 24:5
Surrounding context
24:4 Then the men of David said to him, "This is the day of which the LORD said to you, "Behold, I will deliver your enemy into your hand, that you may do to him as it seems good to you."' And David arose and secretly cut off a corner of Saul's robe.
24:5 Now it happened afterward that David's heart troubled him because he had cut Saul's robe.
24:6 And he said to his men, "The LORD forbid that I should do this thing to my master, the LORD's anointed, to stretch out my hand against him, seeing he is the anointed of the LORD."