New religions were introduced during the time between 700 and 1750 A.D. The teachings of the holy book Quran were brought to India by migrants and merchants in the 17th century as most of the rulers were patrons of Jurists, Islam and theologians.The Quran is considered the holy book of Muslims.According to Shia Muslims, the leader of the Muslim community was the prophet's son-in-law, Ali.The authority of the Khalifa community was accepted by the Sunni Muslims.Shafi and Hanafi were the law schools in India.