Damascenes to a closer defence: but a messenger, whom they dropped from the walls, returned with the promise of speedy and powerful succor, and their tumultuous joy conveyed the intelligence to the camp of the Arabs. After some debate, it was resolved by the generals to raise, or rather to suspend, the siege of Damascus, till they had given battle to the forces of the emperor. In the retreat, Caled would have chosen the more perilous station of the rear-guard; he modestly yielded to the wishes of Abu Obeidah. But in the hour of danger he flew to the rescue of his companion, who was rudely pressed by a sally of six thousand horse and ten thousand foot, and few among the Christians could relate at Damascus the circumstances of their defeat. The importance of the contest required the junction of the Saracens, who were dispersed on the frontiers of Syria and Palestine; and I shall transcribe one of the circular mandates which was addressed to Amrou, the future conqueror of Egypt. "In the name of the most merciful God: from Caled to Amrou, health and happiness. Know that thy brethren the Moslems design to march to Aiznadin, where there is an army of seventy thousand Greeks, who purpose to come against us, _that they may extinguish the light of God with their mouths; but God preserveth his light in spite of the infidels_. As soon therefore as this letter of mine shall be delivered to thy hands, come with those that are with thee to Aiznadin, where thou shalt find us if it please the most high God." The summons was cheerfully obeyed, and the forty-five thousand Moslems, who met on the same day, on the same spot ascribed to the blessing of Providence the effects of their activity and zeal.