Haji Hamzah, N. (2003) “The Government of Khurasan Under Harun Al-Rashid (A.H. 170-193 / A.D. 786-808)”, Jurnal Usuluddin, 17, pp. 163–184. Available at: https://ajba.um.edu.my/index.php/JUD/article/view/4082 (Accessed: 25 December 2024).