The military republic of the Mamalukes still reigned in Egypt and Syria: but the dynasty of the Turks was overthrown by that of the Circassians; [33] and their favorite Barkok, from a slave and a prisoner, was raised and restored to the throne. In the midst of rebellion and discord, he braved the menaces, corresponded with the enemies, and detained the ambassadors, of the Mogul, who patiently expected his decease, to revenge the crimes of the father on the feeble reign of his son Farage. The Syrian emirs [34] were assembled at Aleppo to repel the invasion: they confided in the fame and discipline of the Mamalukes, in the temper of their swords and lances of the purest steel of Damascus, in the strength of their walled cities, and in the populousness of sixty thousand villages; and instead of sustaining a siege, they threw open their gates, and arrayed their forces in the plain. But these forces were not cemented by virtue and union; and some powerful emirs had been seduced to desert or betray their more loyal companions. Timour's front was covered with a line of Indian elephants, whose turrets were filled with archers and Greek fire: the rapid evolutions of his cavalry completed the dismay and disorder; the Syrian crowds fell back on each other: many thousands were stifled or slaughtered in the entrance of the great street; the Moguls entered with the fugitives; and after a short defence, the citadel, the impregnable citadel of Aleppo, was surrendered by cowardice or treachery. Among the suppliants and captives, Timour distinguished the doctors of the law, whom he invited to the dangerous honor of a personal conference. [35] The Mogul prince was a zealous Mussulman; but his Persian schools had taught him to revere the memory of Ali and Hosein; and he had imbibed a deep prejudice against the Syrians, as the enemies of the son of the daughter of the apostle of God. To these doctors he proposed a captious question, which the casuists of Bochara, Samarcand, and Herat, were incapable of resolving. "Who are the true martyrs, of those who are slain on my side, or on that of my enemies?" But he was silenced, or satisfied, by the dexterity of one of the cadhis of Aleppo, who replied in the words of Mahomet himself, that the motive, not the ensign, constitutes the martyr; and that the Moslems of either party, who fight only for the glory of God, may deserve that sacred appellation. The true succession of the caliphs was a controversy of a still more delicate nature; and the frankness of a doctor, too honest for his situation, provoked the emperor to exclaim, "Ye are as false as those of Damascus: Moawiyah was a usurper, Yezid a tyrant, and Ali alone is the lawful successor of the prophet." A prudent explanation restored his tranquillity; and he passed to a more familiar topic of conversation. "What is your age?" said he to the cadhi. "Fifty years."--"It would be the age of my eldest son: you see me here (continued Timour) a poor lame, decrepit mortal.