"The scale and effectiveness of conversions by force are clearly detailed in al-Kufi's Chachnama (for Muhammad Qasim in Sindh), Utbi's Tarikh-i-Yamini (for Mahmud of Ghazni) Hasan Nizami's Taj-ul-Maasir (for Muhammad Ghauri, Qutbuddin Aibak etc.) and Minhaj Siraj's. Tabqat-i-Nasiri (for the early years of the Sultanate period). All Muslim chronicles from the thirteenth to the eighteenth century write with pride about forcible conversions by rulers and nobles."