Sharia Perspective on QRIS-Based Mosque Donations Funded by Conventional Credit Cards: An Analytical Study of Contracts and Validity in Fiqh Muamalah. JMBM [Internet]. 2026 Mar. 5 [cited 2026 Jun. 7];8(1):51-67. Available from: https://journal.paramadina.ac.id/index.php/madani/article/view/1277