2 Samuel 2:24-28

24Joab and Abishai also pursued Abner. And the sun was going down when they came to the hill of Ammah, which is before Giah by the road to the Wilderness of Gibeon.

25Now the children of Benjamin gathered together behind Abner and became a unit, and took their stand on top of a hill.

26Then Abner called to Joab and said, “Shall the sword devour forever? Do you not know that it will be bitter in the latter end? How long will it be then until you tell the people to return from pursuing their brethren?”

27And Joab said, “As God lives, unless you had spoken, surely then by morning all the people would have given up pursuing their brethren.”

28So Joab blew a trumpet; and all the people stood still and did not pursue Israel anymore, nor did they fight anymore.