Islam in Indonesia Islam in Indonesia Islam is the most adhered to religion in Indonesia, with 87.2% of Indonesian population identifying themselves as Muslim in 2010 estimate. Indonesia has the largest Muslim population in the world, with approximately 225 million Muslims. In terms of denomination, absolute majority adheres to Sunni Islam, while there are around one million Shias (0.5%), who are concentrated around Jakarta, and about 400,000 Ahmadi Muslims (0.2%). In terms of Islamic schools of jurisprudence, based on demographic statistics, 99% of Indonesian Muslims mainly follow the Shafi'i school, although when asked, 56% does not adhere to any specific school. Trends of
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