 The Seljuqs originated from the Qynyk branch of the Oghuz Turks, who in the 9th century lived on the periphery of the Muslim world, north of the Caspian Sea and Aral Sea in their Yabghu Khaganate of the Oghuz confederacy, in the Kazakh Steppe of Turkestan.During the 10th century, due to various events, the Oghuz had come into close contact with Muslim cities.When Seljuq, the leader of the Seljuq clan, had a falling out with Yabghu, the supreme chieftain of the Oghuz, he split his clan off from the bulk of the Tokuz-Oghuz and set up camp on the west bank of the lower Syr Darya.