One of the reasons why many Hindus in postclassical South Asia resisted conversion to Islam is because the Hinduism is polytheistic, that means they have many Gods, on the other hand the Islam is monotheistic that means the have only One God, Ala. It would be very difficult for them to change all their belief system and adore only one God and related to that, Hinduism has a social strata system where the richest is worth more and in the Islam predominates that all men are equal before Ala, that was another shock and reason why the Hindus resisted conversion.