Islamic Management Principles in the Abbasid Caliphate: Qur’anic Foundations and Historical Practices. Journal Of Holistic Education [Internet]. 2025 Dec. 26 [cited 2026 Feb. 22];2(1):30-42. Available from: https://barkah-ilmi-fiddunya.my.id/ojs/index.php/jhe/article/view/194