Abdul Hamid H, Abdul Hamid F @ AF. Development of Zakat Administration during Caliph Umar al-Khattab. JAM [Internet]. 2018 Dec. 30 [cited 2024 Jul. 22];6(2):1-14. Available from: https://ejournal.um.edu.my/index.php/MUQADDIMAH/article/view/15547