The central problem of this research is that classic normative ethical theories, due to their single-criterion approaches, face challenges in explaining a moral system consistent with the existential complexities of human beings. Aiming to address this deficiency, this study re-reads the nature of the concept of Wus’ (capacity/potential) as the cornerstone of moral obligation. The main question is: What is the nature and what are the indicators of Wus’, and how does it affect moral obligation? This research, using a descriptive-analytical method and referencing religious texts, identifies the individual differences that influence Wus’. The findings indicate that Wus’ is not an abstract capacity but a concrete result of internal and external assets that form the unique Shakilah (disposition/structure) of the moral agent-a structure that, while preserving the central role of the will, provides the ground for different actions. Consequently, moral obligation is a matter proportionate to the Shakilah and Wus’ of each agent, which reveals the necessity of transitioning from uniform criteria toward a “plurality of criteria,” a principle upon which the “Integrative Meta-theory of Ethics” is based.