Nasr gave his province an unprecedented period of good government, stability and prosperity, so that, in the words of the 9th-century historian al-Mada'ini, "Khurasan was built up as it had never been before" [REF].
Taking advantage of the disintegration of the Turgesh khaganate after the murder of the khagan Suluk, Nasr moved aggressively across the Oxus.