Fadillah R. Hadis-Hadis tentang Jasa (Fee-Based Served): Wakalah, Kafalah, Hawalah. IIJSE [Internet]. 31Jan.2020 [cited 3Apr.2026];2(2):125-46. Available from: https://e-journal.uac.ac.id/index.php/iijse/article/view/511