meanwhile fled to Ilik Khān, the son and successor of Boghrā Khān, and Bokhārā was threatened with a second Uïghūr invasion. In reply to the menace, Sabuktagin, who had quarrelled with Nūh, concluded a peace with Ilik, and appointed the rebellious Fā´ik governor of Samarkand. In A.H. 387 (997) both Sabuktagin and Nūh died, and were respectively succeeded by the valorous and talented Mahmūd, and by Mansūr II. who exhibited qualities precisely the reverse. Transoxiana fell into the power of Ilik Khān, while Mahmūd of Ghazna gained possession of Khorāsān. Turks had long held high office in the states of Islām in Central Asia, as well as in Baghdād and in Egypt, where they had founded a powerful dynasty. It was, therefore, no great change for them to find themselves, as a nation, masters of the extensive kingdom of which Bokhārā was the capital. Mansūr II., after a reign of less than two years, was deprived of sight by one of his discontented courtiers named Bektuzun; and `Abd el-Melik II., a mere child, was set up in his stead. All power was now concentrated in the hands of Fā´ik and Bektuzun. When news of these events reached Ilik Khān in Kāshghar he sent a message to `Abd el-Melik to the effect that he would speedily take measures to protect him. Bektuzun immediately set out to oppose Ilik Khān, but he was unsuccessful, and in A.H. 389 (999) Ilik Khān entered Bokhārā. Instead, however, of helping the young prince, he cast him into prison, where he soon afterwards died.[253] When, in A.H. 389 (999), Ilik Khān[254] wrested Transoxiana from the Sāmānides, their capital was removed to Bokhārā. In A.H. 398 (1007) they attempted to establish themselves south of the Oxus, but were driven back by Mahmūd of Ghazna, and henceforward their territory was restricted to Transoxiana, Kāshghar, and Eastern Tartary.[255] About the beginning of the tenth century a prince of the hereditary house of the Khāns of Kāshghar, named Satuk Boghrā Khān,[256] became the first convert in that country to Islām, which he proceeded to force upon his subjects at the point of the sword, in the face of a determined and protracted opposition which prevented its spread beyond the limits of his own territory. It was only on the downfall of the Sāmānides that the creed of Mohammed, through proselytising zeal--of Mahmūd in the direction of Hindustān, and of Ilik Khān in that of Turkestān--received a fresh impetus, and spread north, south, and east with a rapidity only equalled by the violence employed by its propagators.[257]