Abstract
Since the formation period, the concept of religion and the basic issues related to religiosity have been among the main subjects that attracted the Sūfīs. As a consequence, Sūfī writers showed great interest in the subject and endeavoured to produce a genuine religious thought. This tradition of religious thought, which was developed by the Sūfīs, also dealt with problems concerning other religious systems, their basic tenets and rituals, as well as the relationship with the members of other religions. In this context, the school of Wahdat al-Wujūd, which is one of the most significant schools of thought that was developed within the context of Sūfī tradition, provided the most original explanations concerning the nature of religion, various religions and belief systems and their relationship with each other. This article aims to examine the main tenets of the Wahdat al-Wujūd school concerning the concept of religion as well as several basic issues related to this concept. Therefore, the definition of religion, the need for religion, the transcendent unity of religions, the reason for the plurality of religions and the concept of wahdat-i ma‘būd are among the topics that are discussed in this article.