The religious merit of subduing the city of the CÊsars attracted from Asia a crowd of volunteers, who aspired to the crown of martyrdom: their military ardor was inflamed by the promise of rich spoils and beautiful females; and the sultan's ambition was consecrated by the presence and prediction of Seid Bechar, a descendant of the prophet, [83] who arrived in the camp, on a mule, with a venerable train of five hundred disciples. But he might blush, if a fanatic could blush, at the failure of his assurances. The strength of the walls resisted an army of two hundred thousand Turks; their assaults were repelled by the sallies of the Greeks and their foreign mercenaries; the old resources of defence were opposed to the new engines of attack; and the enthusiasm of the dervis, who was snatched to heaven in visionary converse with Mahomet, was answered by the credulity of the Christians, who _beheld_ the Virgin Mary, in a violet garment, walking on the rampart and animating their courage. [84] After a siege of two months, Amurath was recalled to Boursa by a domestic revolt, which had been kindled by Greek treachery, and was soon extinguished by the death of a guiltless brother. While he led his Janizaries to new conquests in Europe and Asia, the Byzantine empire was indulged in a servile and precarious respite of thirty years. Manuel sank into the grave; and John PalÊologus was permitted to reign, for an annual tribute of three hundred thousand aspers, and the dereliction of almost all that he held beyond the suburbs of Constantinople. [Footnote 83: Cantemir, p. 80. Cananus, who describes Seid Bechar, without naming him, supposes that the friend of Mahomet assumed in his amours the privilege of a prophet, and that the fairest of the Greek nuns were promised to the saint and his disciples.] [Footnote 84: For this miraculous apparition, Cananus appeals to the Mussulman saint; but who will bear testimony for Seid Bechar?]