Perceptive is again of two kinds, intellectual and non-intellectual.
Perceptive is again of two kinds, intellectual and non-intellectual. Intellectual is indeed the superior-most. Intellectual is further divided into two types, knowledgeable and non-knowledgeable. Certainly, wisdom considers knowledgeable to be superior-most. After this introduction of intellect and its kinds we would like to state that after the holy Prophet (s.a.w.a.), Ali (a.s.) was the most knowledgeable personality. There was none his equal among all the people.
In this way, Hazrat Amirul Momineen (a.s.) was the most superior person in the Ummah. One of the proofs of superiority is knowledge, which was present in the personality of Ali (a.s.). Now let us discuss the other causes and signs of superiority because superiority is a quality that is established by its signs and causes. All these causes and signs are present in the person himself. They are not superior to him in isolation. The foremost quality is righteousness. Yes!
Wisdom dictates that righteousness is superior to injustice. Another quality is bravery. Certainly good character is its primary advantage. According to wisdom, it is the most superior quality. Thus, everyone will agree that there was no person equal to Ali (a.s.) as regards bravery and a lofty character in his time. Therefore, he was the most superior person. He was the most deserving one according to wisdom. No doubt about it!
This was in brief, our rational argument to prove the superiority of Ali (a.s.). Let us now prove it from traditional point of view. The first category of textual proofs is the Holy Quran, and the second the sayings of the holy Prophet (s.a.). There is no doubt concerning the validity of these two proofs. As far as the sayings of the Prophet (s.a.) are concerned, if their authenticity is established, the Muslims consider them at par with the verses of the Holy Quran.
The only problem regarding traditions is that some of them are authentic and some are not. Even though hundreds of important writings and thousands of books have been written to interpret and study the traditions we still find a large number of forged sayings among the books of traditions. Some of them have created untold controversies and problems among the Muslim nation. There is a marked difference between the methods of Shia and Sunni scholars in evaluating the authenticity of a hadith.
Shias generally believe that it is necessary for a reporter of hadith to be just (aadil).