The present article, which focuses on the concept of text, first classifies the subjects related to inquiry into concept and then examines the different areas of inquiry into concept from different angles, as follows: the nature of concept, the status of concept, the correct method of approaching concept, the kinds of concept and the evidences supporting it, the conditions of origination and development of the text (i. e the background of concept), the causes behind the different ways of perception and interpretation of a specific text and finally the criterion of the validity of a concept. The article also deals with the status of inquiry into concept in the area of religious studies, both in the science of Qur'anic commentary and in the science of the principles of jurisprudence (Usul), and shows which of these two sciences is related to the issues of inqiry into concept and in which areas there is a need to tackle new researching horizons.
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