Abdul Hamid, H. bin, Abdul Hamid, A. F. and Abdul Wahab, A. (2019) “Development of Zakat Collection During Caliph Umar al-Khattab”, Al-Muqaddimah: Online Journal of Islamic History and Civilization, 6(1), pp. 28–42. Available at: http://borneojournal.um.edu.my/index.php/MUQADDIMAH/article/view/15708 (Accessed: 1 September 2024).