2 Samuel 8:3 in the King James Version
David smote also Hadadezer, the son of Rehob, king of Zobah, as he went to recover his border at the river Euphrates.
Context
2 He defeated Moab, and measured them with the line, making them to lie down on the ground; and he measured two lines to put to death, and one full line to keep alive. The Moabites became servants to David, and brought tribute.
3 David also struck Hadadezer the son of Rehob, king of Zobah, as he went to recover his dominion at the River.
4 David took from him one thousand seven hundred horsemen and twenty thousand footmen. David hamstrung the chariot horses, but reserved enough of them for one hundred chariots.