And when Abner was returned to Hebron, Joab took him aside in the gate to speak with him quietly, and smote him there under the fifth [rib], that he died, for the blood of Asahel his brother.
Berean Study Bible (BSB) - 2 Samuel 3:27 >When Abner returned to Hebron, Joab pulled him aside into the gateway, as if to speak to him privately, and there Joab stabbed him in the stomach. So Abner died on account of the blood of Joab’s brother Asahel.