Xionites, a nomadic tribe prominent in Transoxania and Bactria
However, during the reign of the caliph al-Mahdi (775-85) the Afshin of Oshrusana is mentioned among several Iranian and Turkic rulers of Transoxania and the Central Asian steppes who submitted nominally to him.
Qutbuddin Bakhtiyar Kaki was born in 569 A.H. (1173 C.E.) in a small town called Aush (alternatively Awash or Ush) in the Fergana Valley (present Osh in southern Kyrgyz Republic(Kyrgyzstan), part of historic Transoxania).