AHMAD, Z. . NIṢĀB OF ẒAKĀT . Islamic Studies, [S. l.], v. 20, n. 03, p. 239–259, 1981. Disponível em: http://irigs.iiu.edu.pk:64447/ojs/index.php/islamicstudies/article/view/6009. Acesso em: 6 dec. 2025.