2 Samuel 3:27

And when Abner returned to Hebron , Joab took him aside into the midst of the gate to speak with him privately , and there he struck him in the stomach , so that he died , for the blood of Asahel his brother .

Now when Abner returned to Hebron, Joab took him aside into an inner chamber, as if to speak with him privately. And there, to avenge the blood of his brother Asahel, Joab stabbed him in the stomach, and he died.

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.