حبیب السیر 30: Sultan Khusru Shah.

30

On the death of Bahram Shah, his son Khusru Shah, with the consent of all the nobles, succeeded to the throne; but having received repeated information of the approach of 'Alau-d din Husain, he fled towards Hindustan. Husain Ghori entered Ghaznin, and showed not the slightest mercy, murdering the inhabitants, pillaging, burning, and razing to the ground all the buildings. He then appointed his two nephews Ghiyasu-d din and Sultan Shahabu-d din rulers of the country, and returned to Ghor.
According to Hamdu-lla Mustaufi and some other historians, these two Sultans, by means of cunning stratagems, seized Khusru Shah, and imprisoned him in a fort, where he died in 555 A.H. (1160 A.D.), and thus was terminated the rule of the Ghaznivides. In the Rauzatu-s Safa, however, it is written, that Khusru Shah reigned at Lahor two years after he fled from Ghaznin, and that on his death he was succeeded by his son Khusru Malik. In the year 583 A.H. (1187-8), Sultan Ghiyasu-d din obtained a victory at Lahor, and seized Khusru Malik, whom he sent to Ghaznin and imprisoned. Soon after this, all the family of the Ghaznivide kings fell into the hands of the Ghorians, who put them to death, and depressed the standard of the dominion and of the lives of those Sultáns who had been the canons of justice !