Period after the Gok-Turk State           

        
        Particularly the Islamic resources have cited the Uighur people as Dokuz-oguz people. Therefore, the misinterpretation that was caused by this statement must have been eliminated pursuant to the determination of Uighur tribes and the Dokuz-oguz (nine oguz) tribes (see above Uighur people).

 

        In the beginning of the Uighur Khanate, Mo-yen-çur who was just a "tegin" (prince) was the leader of the Oguz people. However, after a short period, the Oguz people rebelled against the Uighur ruler. They were composed of "Sekiz-oguz" (Eight-Oguz) tribes. Mo-yen-çur Ruler defeated the Oguz people that had collaborated with Otuz-Tatars in Burgu and in the banks of Selenga River successively. Oguz people passed over Selenga River and they retreated.

 

        There is not much information about the Oguz people that stayed in the homeland region following this period. There must have been a probable movement of migration in the direction of the west. Ibnü'l-Esir declared that the Oguz people had come to the region of Transoxania in the perod of the Caliph El-Mehdi (775-785). It has been anticipated that these people were related with the "Dokuz-oguz" (Nine-Oguz) raid that was forayed towards Uşrusana (between Seyhun- Samarkand) between the years 820-821 that was cited in the work titled as Al-Taberi.

 

        On the basis of these events, the members of the "Oguz union" must have immigrated to the region of Talas before immigration to Orhun region in crowded groups.

 

        Considering that the Turkish language spoken by Seyhun Oguz people in the 11th century was different from the language spoken by the eastern Turks in respect of wolds and pronunciation, it has been alleged that this migration must have taken place before the 9th century.