The stones of the torrents were bent, so that they might rest in Ar and lie back within the borders of the Moabites
Other versions
King James Version
And at the stream of the brooks that goeth down to the dwelling of Ar, and lieth upon the border of Moab. English Standard Version
and the slope of the valleys that extends to the seat of Ar, and leans to the border of Moab."New International Version
and the slopes of the ravines that lead to the site of Ar and lie along the border of Moab."