After Turan Shah's death, his mother was proclaimed sultana, and the Mamluk Aibek became general of the army. Later, when the caliph of Baghdad revolted against the rule of a woman, Aibek assumed the title of sultan and married Shejret ed-Durr. He ruled again after some time in the name of a young descendant of Kamil, so as to be able to fight against the Ayyubids in Syria, who, with En-Nasir at their head, had taken possession of Damascus, with an appearance of right. A battle took place between Aibek and the Syrians (February, 1251), which was decided in favour of Aibek in consequence of the treachery of the Turks under Nasir. Aibek again assumed the title of sultan after the victory, but was soon after to be murdered by the Mamluks, who were unwilling to be subject to any control. He anticipated their plot, however, and slew their leader, the Emir Aktai, putting his followers to flight. He then demanded the diploma of investiture and the insignia of his office from the caliph, and also pressed the Prince of Mosul to grant him his daughter in marriage. His own wife, unable to endure such perfidy, had him murdered in his bath (April 10, 1257). [Illustration: 032b] When Beybars first ascended the throne, he assumed the name of Sultan Kahir (the over-ruler), but afterwards, when he was informed that this name had always brought misfortune to its bearer, he changed it to that of Sultan Zahir (the Glorious). Now that he was absolute master of Syria and Egypt, Beybars tried to obliterate the remembrance of the misdeeds he had formerly been guilty of by means of undertakings for the general good and for the furtherance of religion. He had the mosques repaired, founded pious institutions, designed new aqueducts, fortified Alexandria, had all the fortresses repaired and provisioned which the Mongols had razed to the ground, had a large number of great and small war-ships built, and established a regular post between Cairo and Damascus. In order to obtain a semblance of legitimacy, since he was but a usurper, Beybars recognised a nominal descendant of the house of Abbas as caliph, who, in the proper course of things, ought to invest him with the dominions of Syria and Egypt. Beybars bade his governors receive this descendant of the house of the Prophet with all suitable marks of honour, and invited him to come to Egypt. When he approached the capital, the sultan himself went out to meet him, followed by the vizier, the chief cadi, and the chief emirs and notabilities of the town. Even the Jews and Christians had to take part in the procession, carrying respectively the Tora and the Gospel. The caliph made his entrance into Cairo with the greatest pomp, rode through the town amidst the shouts of the multitude, and proceeded to the citadel, where Beybars had appointed him a magnificent dwelling. Some days afterwards the caliph had a reception of the chief cadi, the most celebrated theologians and lawyers of Egypt, and many notables of the capital.