"Aibak-entered upon a series of conquests. He despatched Ihhtiyaruddin Bakhtiyar Khalji to the East and himself captured Kol (modern Aligarh) in 1194. There “those of the garrison who •were wise and acute were converted to Islam, but those who stood "by their ancient faith were slain with the sword.” 51 In 1195 when Raja Bhim of Gujarat was attacked, 20,000 prisoners were •captured, 55 'and in 1202 at Kalinjar 50,000, 55 “and we may be sure that (as in the case of Arab conquest oT Sind) all who were made •slaves were compelled to embrace the religion of the masters to -whom they were allotted.” 57 Ferishtah specifically mentions that on the capature of Kalinjar “fifty thousand kaniz vo gliulam, having suffered slavery, were rewarded with the honour of Islam.” is According to Ferishtah three to four hundred thousand Khokhars jmd Tirahias were also converted to Islam by Muhammad Ghori. (106)"