2 Samuel 2:24-28

24But Joab and Abishai pursued Abner. And as the sun was going down they came to the hill of Ammah, which lies before Giah on the way to the wilderness of Gibeon.

25And the people of Benjamin gathered themselves together behind Abner and became one group and took their stand on the top of a hill.

26Then Abner called to Joab, "Shall the sword devour forever? Do you not know that the end will be bitter? How long will it be before you tell your people to turn from the pursuit of their brothers?"

27And Joab said, "As God lives, if you had not spoken, surely the men would not have given up the pursuit of their brothers until the morning."

28So Joab blew the trumpet, and all the men stopped and pursued Israel no more, nor did they fight anymore.