Through my research, “Characteristics and Features of the Fundamentalist heritage in the Ninth-Century AH,” I dealt with several issues. I dealt with the definition of the method in language and convention, and I talked about the importance of the scientific method in building civilizations. Then, I presented the differences among scholars and their approaches to studying the origins of jurisprudence. Under this title, I mentioned three of the scholars’ curricula and what distinguished each approach and mentioned some of the products of these curricula. After that, I dealt with the arrangement, classification and style in terms of definition and importance, with an explanation of the Ninth-Century scholars’ curricula in their fundamentalist writings. Later, I mentioned the difference in the Ninth-Century scholars’ classification of fundamentalist topics. Then, I talked about the importance of style in composition and that it is the ideal tool by which information is received. This was not overlooked to mention the most important criteria for a successful method, reinforced by what I have been able to say from the scholars. Subsequently, I explained the features of the original production related to terminology and boundaries and mentioned the features of the terminology of the fundamentalist production in the Ninth-Century, up to the talk about the features of the original production related to disagreement and reasoning, in which I elaborated on it and discussed it through the features related to liberating the place of conflict, the cause of disagreement, its type and its fruit. Later, I discussed inference by the saying, the language and the reasonable, to conclude with the conclusion, in which I mentioned the most important findings and recommendations that meant to me through my research.