"Evidence that Indian Muslims have strong caste prejudices among them is compelling. Early Muslim historians of medieval India like Minhaj-i Siraj Juzjani and Ziauddin Barani (thirteenth-fourteenth century ce) denigrated the Indian converts to Islam. Barani advocated that the sultans should employ only those persons in government service that had aristocratic backgrounds by birth. He advised that children of low caste Hindu converts to Islam should not be admitted into madrassas because this education would qualify them for government jobs. Sultan Ghiyasuddin Balban (r. 1266-87 ce) made noble birth a prerequisite for state service and rejected candidates for official positions if they were low caste converts to Islam. It is also notable that when Sir Syed Ahmed Khan founded the Aligarh Muslim University in 1875, it banned admission to low caste Muslims."