In the sixth century of the common era, the Prophet Muhammad appeared in the Arabian Peninsula, proclaiming the message that there was only one god, called Allah, and that all people should obey Allah's requirements for their lives. Today, Islam is the second-largest religion in the world, with more than 1.6 billion Muslims adhering to this faith. However, although all Muslims do revere Islam s sacred scripture, the Qur an, there are many differences...