The expedition therefore was obviously against unbelievers. That the whole of _S_ughd was lost to the Arabs is clear from the fact that Asad found it necessary to take provisions for the army with him from Bukhārā. He was not successful in recapturing the city, however, and attempted no more than the damming of the canal sluices at Waraghsar.
The fate of the garrison of Samarqand has thus been passed over in silence, unless, perhaps, it is hinted at in Asad’s reference to the capture of Muslim women. Whether Ghūrak recaptured it with his own troops or with the aid of the Türgesh, it can scarcely be doubted that he had taken advantage of the dissensions in Khurāsān to realise his ambition and at last drive the Arabs out of his capital. Of all the conquests of Qutayba beyond the Oxus, Bukhārā, Chaghāniān, and perhaps Kish alone remained to the Arabs. A confirmatory detail is the cessation of _S_ughdian embassies to China between 731 and 740: now that independence (even if under Türgesh suzerainty) had been won again, there was no need to invoke Chinese support. Negative evidence of the same kind is afforded by the absence of any Arab embassy during the same period. Had the Arabs been in possession of _S_ughd, it is practically certain that Asad, as he had done before, would have renewed relations with the Chinese court. Against this view may be set the statement in _T_ab. 1613. 5 that Khāqān was preparing an army to invest Samarqand at the time of his assassination. This report is, however, from its nature untrustworthy, and is contradicted by the presence of the king of _S_ughd with _S_ughdian troops in the Türgesh army in 119/737 as well as by Na_s_r b. Sayyār’s expedition to Samarqand two years later. _S_ughd thus enjoyed once more a brief period of independence. In 737 or 738 Ghūrak died and his kingdom was divided amongst his heirs. He was succeeded at Samarqand by his son Tu-ho (? _T_arkhūn), formerly prince of Kabudhān. Another son Me-chuʾo (? Mukhtār) was already king of Māyamurgh, while the king of Ishtīkhan in 742 was a certain Ko-lo-pu-lo who may perhaps be identified with Ghūrak’s brother Afarūn[91].
The year after the campaigns against _H_ārith, 118/736, was devoted by Asad to the re-organisation of his province, including a measure which, it seems, he had already projected in his first term of office. This was the removal of the provincial capital from Merv to Balkh[92]. Since no other governor of Khurāsān followed his example we must seek the motive for the innovation either in the contemporary situation in Khurāsān and Transoxania or in Asad’s personal views. Explanations based on the former are not hard to find. Asad, on taking office, had been faced with a serious situation both in Lower _T_ukhāristān and across the river. He had obviously to establish a strong point _d’appui_. The loyalty of the garrison at Merv was not above suspicion but the garrison at Balkh was composed of Syrian troops, who could be trusted to the uttermost[93]. Merv was also less convenient for reaching _T_ukhāristān, which was at the moment the main area of operations. More important still, perhaps, Balkh was the centre from which all disturbances spread in Eastern Khurāsān, as in the revolt of Nēzak and the recent attempt of _H_ārith. As the holding of Balkh had enabled Qutayba to forestall Nēzak, it is possible that Asad felt that in Balkh he would be in a position to check all similar movements at the beginning. Other considerations may also have disposed him to take this view. Balkh was the traditional capital and on it, as we have seen, was focussed the local sentiment of Eastern Khurāsān. Merv, on the other hand, had always been the capital of the foreigners, of the Sāsānians before the Arabs. Asad’s personal friendship with the dihqāns may have given him some insight into the moral effect which would follow from the transference of the administration to the centre of the national life. Still greater would this effect be when the rebuilding was carried out not by the Arabs themselves but by their own people under the supervision of the Barmak, the hereditary priest-ruler of the ancient shrine. Quite apart from this, however, the rebuilding of Balkh was an event of the greatest significance, and once restored it soon equalled, if it did not eclipse, its rival Merv in size and importance. While the new city was being built, the army was employed in expeditions into _T_ukhāristān, for the most part under the command of Judayʿ al-Karmānī, who achieved some successes against the followers of _H_ārith and even succeeded in capturing their fortress in Badakhshān. Other raids were undertaken by the governor himself, but without results of military importance.