For seventy days had Damascus been besieged by these fanatic legions of the desert. They had no heart to make further sallies. They began to talk of capitulation. Khaled turned a deaf ear to their prayer for a truce: he was bent upon taking the city by the sword and giving it up to be plundered by his Arabs. Then they sought under promise of security the meek and humane Abu Obeidah. One hundred of the principal inhabitants went by night to this leader of the mighty power that was shaking the empire of the Orient, and found him living in a humble haircloth tent like a mere wanderer of the desert. He listened to their proposals, for his object was conversion rather than conquest, and tribute rather than plunder. A covenant was written; such of the inhabitants as pleased could depart in safety with so much of their effects as they could carry: the rest should remain as tributaries and have seven churches allotted to them. The gate was then thrown open and the venerable chief entered at the head of a hundred men to take possession. At the eastern gate a very different transaction was taking place. An apostate priest, on condition of security of person and property to himself and relatives, agreed to deliver the gate into the hands of Khaled. Thus a hundred Arabs were introduced into the city, broke the bolts and chains and bars of the Eastern gate and threw it open with the cry "Allah Achbar." Khaled and his legions rushed in at the gate with sound of trumpet and tramp of steeds; putting all to the sword, deluging the streets with blood. "Mercy! Mercy!" was the cry. "No mercy for infidels," was Khaled's fierce response. He pursued his career of carnage into the great square and there to his utter astonishment beheld Abu Obeidah and his attendants, with priests and monks, surrounded by the principal inhabitants and women and children. Khaled was furious when he heard of the covenant. Abu Obeidah entreated him to respect the covenant he had made in the name of God and the prophet. After fierce altercation he listened to policy though deaf to the cry of pity. They were just beginning their career of conquest. Many cities were to be taken. If the Moslem word was broken, other cities warned by the fate of Damascus would in fear and fury fight to the bitter end. Khaled finally gave a slow consent, though murmuring at every article of the covenant. All who chose to remain as tributaries were to enjoy the free exercise of their religion. All who wished might depart, but Khaled only gave them three days grace from pursuit.