KJV:
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 Helkathhazzurim, which is in Gibeon.
NASB:
Each one of them seized his opponent by the head and thrust his sword in his opponent's side; so they fell down together. Therefore that place was called Helkath-hazzurim, which is in Gibeon.