The Prophet Muhammad proudly proclaimed his Revelation to be Qur'ānun 'arabiyyun, qur'ānun mubin "an Arabic Koran, a clear, intelligible Koran."1 Whether this phrase simply meant that his Meccan audience could readily understand it without any further interpretation because it was revealed in their native tongue, or whether it was a revelation that could not be contradicted, it did not take long before the Prophet's followers, after his death, were in need of further implementation and explanation of even the obvious meanings of its Surahs and Ayas.