Meanwhile, Tekish died in 1200 and was succeeded by his son Alauddin Shah. Taking advantage of the civil war between Alauddin and his nephew Hindu Khan for the throne, the Ghurids successfully captured Nishapur, Merv, Tus and reached right up to Gorgan and Bisṭām. Further, in Merv, the Ghurids stationed Alauddin's rival Hindu Khan on the throne. Thus, the Ghurids for a short time captured most of the Khorasan for the first time. However, Alauddin soon ascended to the throne in August 1200 and recaptured his territories from the Ghurids after a series of incursion which began from September 1201 and recaptured Nishapur and other Ghurid conquests including Herat. Despite this success, Alauddin tried to make cordial relations with the Ghurids (possibly to get rid from Qara Khitai supremacy) and wrote a letter to them to treat him as his son and offered to marry his mother Turkan Khatun to Muhammad of Ghor. However, the overtures by Alauddin were turned down by the Ghurids and they continue to carry raids in Khorasan.
