Rasul Mustafa Mohammed, The Issue of Justice by Rashidun Caliphs (11-40 H/ 633-661 AD in the Field of Finance.
Rasul Mustafa Mohammed https://iasj.rdd.edu.iq/journals/uploads/2026/05/18/74ba1ba5eb8377852016385db02667c3.pdf
Rasul Mustafa Mohammed https://iasj.rdd.edu.iq/journals/uploads/2026/04/10/8969c7f37004a5211caa69a56b1345f9.pdf