High Quality Content by WIKIPEDIA articles! Various sources of Islamic law are used by Islamic jurisprudence to elucidate the Sharia, the body of Islamic law. The primary sources, accepted universally by all Muslims, are the Qur`an and Sunnah. The Qur`an is the holy scripture of Islam, believed by Muslims to be the direct and unaltered word of Allah. The Sunnah consists of the religious actions and quotations of the Islamic Prophet Muhammad and narrated through his Companions and Imams- (as per the beliefs of the school of Ahle-Sunnah and Ahle-Shia). However, some schools of jurisprudence use different methods to judge the source`s level of authenticity.