Journey to Khalafah and Tamkeen fil ‘Ard Milestones on the Way. The International Research Journal of Usooluddin , [S. l.], v. 1, n. 2, p. 1–12, 2017. Disponível em: https://journalusooluddin.com/index.php/irjdu/article/view/14. Acesso em: 13 oct. 2026.