The World's Muslims: Unity and Diversity - Pew Research Center

The world’s 1.6 billion Muslims are united in their belief in God and the Prophet Muhammad and are bound together by such religious practices as fasting during the holy month of Ramadan and almsgiving to assist people in need. But they have widely differing views about many other aspects of their faith, including how important religion is to their lives, who counts as a Muslim and what practices are acceptable in Islam, according to a worldwide survey by the Pew Research Center’s Forum on Religion & Public Life. - Read the Full Report
The World's Muslims: United in Faith; Diverse in Opinion - pewforum Graphic: Muslim Beliefs Around the Globe