Mahmud of Ghori (from Hasan Nizami's Taj-ul-Maasir) Kol (Modern Aligarh) "Those of the horizon who were wise and acute were converted to Islam, but those who stood by their ancestoral faith were slain with the sword" Kol (Modern Aligarh) 20,000 prisoners were taken and made slaves 'Three bastions were raised as high as heaven with their heads and their carcases became food for the beasts of prey   Kalinjar 50,000 prisoners were taken as slaves Varnasi or Kasi (Benaras) : Kamil-ut-Tawarikh of Ibn Asir records, "The slaughter of Hindus (at Varanasi) was immense; none were spared except women and children,(who were taken into slavery) and the carnage of men went on until the earth was weary."