Dila Iska Ariyanti, Mashudi. Implementation of the Istishna’ Contract in BTN Syariah Surabaya’s Indent IB Mortgage Financing. arfa [Internet]. 2025 Jul. 2 [cited 2025 Oct. 31];3(1):39-58. Available from: https://al-arfa.my.id/index.php/i/article/view/80