1 Samuel 24:5

And the men of David said to him, Behold, this [is] the day of which the Lord spoke to thee, that he would deliver thine enemy into thy hands; and thou shalt do to him as [it is] good in thy sight. So David arose and cut off the skirt of Saul's garment secretly.

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

Afterward, David’s heart struck him because he had cut off Saul’s skirt.