ABDUL HAMID, H. bin; ABDUL HAMID, A. F.; ABDUL WAHAB, A. Development of Zakat Collection During Caliph Umar al-Khattab. Al-Muqaddimah: Online Journal of Islamic History and Civilization, [S. l.], v. 6, n. 1, p. 28–42, 2019. Disponível em: https://ejournal.um.edu.my/index.php/MUQADDIMAH/article/view/15708. Acesso em: 9 may. 2024.