Muhammad Abdo, Ahmad, Luqman Haji Abdullah, and Abdul Karim Ali. 2020. “التأصيل الفقهي لبيع المعاطاة: Basis of Islamic Jurisprudent For The Sale of Conduct”. Online Journal of Research in Islamic Studies 7 (2):87-97. http://mjs.um.edu.my/index.php/RIS/article/view/27356.