Muntakhab al-tawarikh 20.1.5

20.1.5

and in that year Sultan Ghiyasu-d-Din removed his effects from the transitory world to the eternal abode, and Sultan Mu'izzu-d-Din having heard this news when on the confines of Tus and Sarakhs, turned towards Badghis and performed the duties of the mourning ceremonies and having divided his brother's dominions among his kindred came to Ghaznin and brought an army against Khwarazm, and on the first occasion Sultan Muhammad Khwarazm Shah suffered defeat, and the Sultan pursued him and fought the Khwarazmians at the head of an aqueduct which they had dug from the eastern bank of the Jaihun and a number of the noted generals of Ghor were martyred and he could not take Khwarazm: he also fought a great battle with an army of Khita'i kings of Turkistan who had come to the help of Sultan Muhammad, on the banks of the river Jaihun—he fought right bravely but at last was defeated, and being left with a hundred thousand cavalry soldiers he entered the fortress of Andkhud where he entrenched himself, and having asked for quarter returned to Ghaznin;