“Islamic Management Principles in the Abbasid Caliphate: Qur’anic Foundations and Historical Practices” (2025) Journal Of Holistic Education, 2(1), pp. 30–42. Available at: https://barkah-ilmi-fiddunya.my.id/ojs/index.php/jhe/article/view/194 (Accessed: 22 February 2026).