2 Samuel 2:16
And they caught every one his fellow by the head, and thrust his sword in his fellow’s side; so they fell down together: wherefore that place was called Helkath-hazzurim, which is in Gibeon. And they caught every one his fellow by the head, and thrust his sword in his fellow’s side; so they fell down together: wherefore that place was called Helkath-hazzurim, which is in Gibeon.
The clash took place at Gibeon, where Abner came with his forces to make Ish-bosheth son of Saul king and was met by Joab with the opposing force. The fighting was opened by twelve chosen young men put forward from each side.
Each man caught his fellow by the head, the Hebrew word chazaq denoting a seizing or catching hold, and thrust his sword into his fellow's side, so that the two fell down together. The spot at Gibeon where this happened was called Helkath-hazzurim.
The episode was internal strife in the establishing of David's reign, belonging to the history in 2 Samuel 2-4 of the causes that led to David being made king over all Israel. It stood in the lingering warfare between Judah and Israel in which David proved continually victorious, while Ish-bosheth had no ability to unite the fragments of the kingdom and the cause of religion was low. Behind all these political changes was God's purpose to bring David to the throne.