The first of these bloody sultans, Kutb-d Din Aibak, was a normal specimen of his kind—fanatical, ferocious and merciless. His gifts, as the Mohammed… - Qutb-ud-din Aibak

[Qutub-ud-din Aibak] was a typical specimen of the ferocious Central Asian warriors of the time, merciless and fanatical. His valour and profuse liberality to his comrades endeared him to the bloodthirsty historian of his age, who praises him as having been a ' beneficent and victorious monarch. …His gifts were bestowed by hundreds of thousands, and his slaughters likewise were by hundreds of thousands. All the leaders in the Muslim conquest of Hindostan similarly rejoice in committing wholesale massacres of Hindu idolaters, armed or unarmed.

In Aibak’s expedition to Benares, ‘which was the centre of the country of Hind… here they destroyed nearly one thousand temples, and raised mosques on their foundations; and the knowledge of the law (Sharia) became promulgated, and the foundations of religion were established,’ adds Nizami. In January 1197, Qutbuddin Aibak advanced against Nahrwala, the capital of Gujarat and ‘fifty thousand infidels were dispatched to hell by the sword and from the heaps of the slain, the hills and the plains became of one level’ and ‘more than twenty thousand slaves, and cattle beyond all calculation fell into the hands of the victors.’ On Aibak’s brilliant achievement in the expedition to Kalinjar in 1202, records Nizami: ‘The temples were converted into mosques… and the voices of summoners to prayer ascended to the highest heaven and the very name of idolatry was annihilated.’ ‘Fifty thousand came under the collar of slavery and the plain became black as pitch with Hindus,’ continues Nizami.

In the year A.D. 1202, when Qulb-ud-Din captured Kalinjar, after the temples had been convened into mosques, and the very name of idolatry was annihilated, fifty thousand men came under the collar of slavery and the plain became black as pitch with Hindus.