Ultimately, the Holy Koran is the only source of authority in Islam

The Holy Qur'an, most sacred book of Islam, is a collection of revelations from Allah to the Prophet Muhammad. The Qur'an acts as a guide for the Muslim, covering all aspects of everyday Muslim life. The Qur'an is by far the most important and influential foundation of Islam, but it is not the only source of authority. In addition to the Qur'an, the Sunnah of the Prophet, preserved in the hadiths, offers guidance on proper …

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