Ambedkar was critical of Islam and its practices in South Asia. While justifying the Partition of India, he condemned the practice of child marriage in Muslim society, as well as the mistreatment of women.
He said,
'' No words can adequately express the great and many evils of polygamy and concubinage, and especially as a source of misery to a Muslim woman. Take the caste system. Everybody infers that Islam must be free from slavery and caste.[While slavery existed], much of its support was derived from Islam and Islamic countries. While the prescriptions by the Prophet regarding the just and humane treatment of slaves contained in the Koran are praiseworthy, there is nothing whatever in Islam that lends support to the abolition of this curse. But if slavery has gone, caste among Musalmans [Muslims] has remained. ''
He wrote that Muslim society is "even more full of social evils than Hindu Society is" and criticized Muslims for sugarcoating their sectarian caste system with euphemisms like "brotherhood". He also criticized the discrimination against the Arzal classes among Muslims who were regarded as "degraded", as well as the oppression of women in Muslim society through the oppressive purdah system. He alleged that while Purdah was also practiced by Hindus, only among Muslims was it sanctioned by religion. He criticized their fanaticism regarding Islam on the grounds that their literalist interpretations of Islamic doctrine made their society very rigid and impermeable to change. He further wrote that Indian Muslims have failed to reform their society unlike Muslims in other countries like Turkey.
In a "communal malaise", both groups [Hindus and Muslims] ignore the urgent claims of social justice.
