The present study aimed to develop the components of rational education based on Tafsir Tasnim and its application in the curriculum. This qualitative documentary research employed Strasberg's five-step thematic analysis method to examine interpretive propositions related to reason in Tafsir Tasnim. The research field included the entire Tafsir Tasnim and relevant verses, and no sampling was conducted due to the comprehensive nature of the study (the population equaled the sample). The analysis process consisted of five stages:data management, data engagement, data display, analysis development, and final typology. Trustworthiness was ensured through repeated code reviews, overlap corrections, and aligning each component with textual evidence from the interpretation. The findings were organized into three coding levels: open coding (189 themes), axial coding (44 recurring themes), and selective coding (5 main categories), resulting in five core components: Principles of Rational Thought, Obstacles to Reason, for Evaluating Reason, Rational Actions, and Signs of Rational Thought, each containing numerous sub-components. The results indicated that rationality in Tafsir Tasnim is an evolutionary, multi-layered process intertwined with monotheism, spirituality, and ethics. This framework, emphasizing Iran's philosophical-religious context and upstream documents such as the Fundamental Transformation Document and the National Curriculum Document—which identify reason as a central element—is applicable to curriculum elements and can serve as a comprehensive roadmap for the country's curriculum planning system.