This article explores the impact of sustainable development (SD) principles from Imam Ali's Letter 53 on the performance of Moroccan public organizations. Letter 53, addressed by Imam Ali to his governor in Egypt, represents a charter of equitable governance and social justice. Despite contemporary challenges, this study focuses on five key SD variables: Population, Planet, Prosperity, Peace and Partnership, analysing their influence on organizational performance. The results show a significant positive correlation between the adoption of the Letter 53 principles and improved performance in Moroccan public organizations. Indeed, univariate and bivariate analyses reveal that these principles promote greater operational efficiency, as well as increased customer satisfaction. The sine qua non for achieving these results is the adoption of management policies based on justice and equity. Despite the obstacles, it is crucial to promote sustainable environmental practices, support solidarity actions, strengthen peace and social cohesion, and develop strategic partnerships. This study therefore highlights the relevance of Imam Ali's teachings on sustainable development and their applicability in the current context of Moroccan public organizations.