Salam
Imam Ali (a) stated this about the Quran:
But the Prophet left among you the same which other Prophets left among their peoples, because Prophets do not leave them untended (in dark) without a clear path and a standing ensign, namely the Book of your Creator clarifying its permission and prohibitions, its obligations and discretion, its repealing injunctions and the repealed ones, its permissible matters and compulsory ones, its particulars and the general ones, its lessons and illustrations, its long and the short ones, its clear and obscure ones, detailing its abbreviations and clarifying its obscurities.
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