Annals of the early Caliphate from the death of Mahomet to the Omeyyad and Abbaside dynasties A.H. XI-LXI (A.D. 632-680) from original sourcesNote 155 — Chapter XI · CAMPAIGN IN SYRIA.—BATTLE OF WACUSA ON THE YERMUK. A.H. XIII. A.D. 634.Reading editionAr, or Rabbah of Moab.◇Copy noteReturn to CHAPTER XI. CAMPAIGN IN SYRIA.—BATTLE OF WACUSA ON THE YERMUK. A.H. XIII. A.D. 634.