This article explores the implications of the verse of Mubāhalah in relation to the status of Ali ibn Abi Talib (as) as the soul of the Prophet Mohammad (pbuh). The verse, revealed in the context of a confrontation with the Christians of Najran, emphasizes the deep spiritual and existential bond between the Prophet and Ali (as), highlighting Ali's unique position among the companions. Through a qualitative textual analysis of various interpretations and commentaries, including those from both Shia and Sunni scholars, this study investigates how the verse underscores Ali's superior virtues and inherent right to leadership following the Prophet’s demise. The article critically examines opposing views, particularly those presented by Ibn Taymiyyah, which seek to diminish the significance of this verse in establishing Ali's caliphate. Ultimately, this study aims to affirm the profound implications of the verse of Mubāhalah as a testament to Ali's esteemed role within the Islamic tradition and his rightful place in the succession narrative.