Abstract
<jats:p>The Five Principles (al-Uṣūl al-Khamsa) in the Ibāḍī Tafsīr Tradition Schools of theology are formations that emerge within specific historical contexts and develop in interaction with other religious and political movements. This book examines, as a concrete case of such interaction, the similarities between Ibāḍism and Muʿtazilism concerning their doctrinal principles, through the lens of the Ibāḍī tafsīr tradition. Its primary aim is to analyze the relationship both in terminology and content between the Ibāḍī principles of belief, sometimes referred to by certain Ibāḍī scholars as al-uṣūl al-tisʿa (the nine principles), and the Muʿtazilī al-uṣūl al-ḫamsa (the five principles), and to assess the nature and extent of the interaction between the two schools. In order to provide a broader comparative framework, Sunnī theological approaches are also incorporated into the analysis. At the center of the study stands Taysīr al-Tafsīr by Muhammad b. Yūsuf Aṭṭafayyish (d. 1914), one of the most prominent representatives of modern Ibāḍī scholarship. In this comprehensive commentary, al-Iṭṭafayyish addresses theological issues under the headings of uṣūl and ʿaqīda, explicitly articulating and defending the doctrinal positions of his school. The work thus provides a particularly fruitful basis for tracing how Ibāḍī theology is constructed and expressed through Qurʾānic exegesis. The book examines key kalām debates—such as divine attributes, human free will and acts, the status of grave sinners, the relationship between faith and works, intercession, and the principle of commanding right and forbidding wrong— within the framework of the five principles. In doing so, it highlights both convergences and divergences between Ibāḍism and Muʿtazilism, demonstrating how inter-sectarian theological interaction can be traced through the exegetical tradition. Keywords: Tafsir; Ibāḍism; Aṭṭafayyish; Taysīr al-Tafsīr; al-Uṣūl al-ḫamsa</jats:p>