In Mulla Sadra’s Transcendent Philosophy, “moral guarantee” is defined as an ontological and formative responsibility that humans bear towards their actions and psychic states. The true value of any moral deed depends on the realization of three pillars: pure intention, full awareness, and the agent’s complete freedom, which must also receive approval from refined reason and conform with divine law. According to Sadra, a genuinely moral act carries moral guarantee only if both intellect and Sharia sanction it; without this, the person suffers existential decline and diverges from human perfection. Ayatollah Javadi Amoli, following Sadraean principles, likewise sees the fruit of moral guarantee in the “embodiment of actions.” He emphasizes that the soul-action relation, based on correspondence and causality, mirrors cause and effect. From his view, the soul’s persistence and bodily resurrection depend on the fact that each action and soul-state has its own existential mode and inner aspect, which, on the Day of Resurrection, manifests as a level of the soul’s existence. Thus, moral guarantee is not explained by fear of legal or social penalty, but rather by certainty about the afterlife embodiment of acts and existential identification of the soul. Through examining Sadraean foundations and systematically analyzing Javadi Amoli’s ideas, this research shows that the supreme outcome of moral guarantee is the existential realization of acts—guaranteeing the continuity of human identity and determining one’s afterlife destiny.