6 and thither they have come, unto the midst of the house, taking wheat, and they smite him unto the fifth [rib], and Rechab and Baanah his brother have escaped;"
2 Samuel 4:6 Cross References - CLV
2 Samuel 2:23
23 And he refuses to turn aside, and Abner smites him with the hinder part of the spear unto the fifth [rib], and the spear comes out from behind him, and he falls there, and dies under it; and it comes to pass, every one who has come unto the place where Asahel has fallen and dies--they stand still.
2 Samuel 3:27
27 And Abner turns back to Hebron, and Joab turns him aside unto the midst of the gate to speak with him quietly, and smites him there in the fifth [rib] --and he dies--for the blood of Asahel his brother.
2 Samuel 20:10
10 and Amasa has not been watchful of the sword that [is] in the hand of Joab, and he smites him with it unto the fifth [rib], and sheds out his bowels to the earth, and he has not repeated [it] to him, and he dies; and Joab and Abishai his brother have pursued after Sheba son of Bichri.