i.e. The injury done to me by Hagar, who thus wickedly requites my kindness to her, be upon thee. i.e. is to be imputed to thee; thou art the cause of it, because thou dost not maintain my reputation, and repress her arrogancy.
The Lord give forth a righteous sentence between us, and deal with each of us according to our guilt or innocency in this matter. Compare 1Sa_24:12,15.