Wajdi, Salman, and Rina Asmara Agung Ay. “Financial Thought Innovations During the Time of Umar Bin Khattab”. AT-TASYRI’: JURNAL ILMIAH PRODI MUAMALAH 16, no. 2 (December 26, 2024): 221-233. Accessed August 6, 2025. https://www.ejournal.staindirundeng.ac.id/index.php/Tasyri/article/view/3566.