TSK · Numbers 21:15

for a fire has gone out of Heshbon, a flame from the city of Sihon. It has devoured Ar of Moab, The lords of the high places of the Arnon.

"You are this day to pass over Ar, the border of Moab:

The burden of Moab: for in a night, Ar of Moab is laid waste, and brought to nothing; for in a night Kir of Moab is laid waste, and brought to nothing.