Bangladesh followed by 86.6 percent of the population. The country is home to most Bengali Muslims, the second-largest ethnic group in the Muslim world. Most Bangladeshi Muslims are Sunni, followed by Shia and Ahmadiya. About four percent are non-denominational Muslims. Bangladesh has the fourth-largest Muslim population in the world, and is the third-largest Muslim-majority country (after Indonesia and Pakistan). Sufism has a lengthy heritage in the region. The largest gathering of Muslims in Bangladesh is the Bishwa Ijtema, held annually by the Tablighi Jamaat. The Ijtema is the second-largest Muslim congregation in the world, after the Hajj. Hinduism is followed by
Growth of Muslim Population in Medieval India School of Oriental and African Studies", Digby stated that estimate lacks accurate data in pre-census times. Marxist historian Irfan Habib criticized the book in his "Economic History of the Delhi Sultanate"(1978). K. S. Lal wrote a reply to Irfan Habib's criticism in 1979 in his book "Bias in Indian Historiography" (1979) and "Theory and Practice of Muslim State in India" (1999). Koenraad Elst, a Hindutva sympathizer, referred to Lal's statistics in his book "Negationism in India", remarking that "More research is needed before we can settle for a quantitatively accurate evaluation of Muslim rule in India, but at least we