Salma Rahmawati Ramadani, Shafa Kamila, Rege Rusliyane, Lutfi Saepul Akbar, and Muhamad Ibnu Malik, “The Concept of Buying and Selling in Muamalah Fiqh: Study of Harmony, Transaction Terms and Prohibitions”, Kawakib, vol. 2, no. 1, pp. 30–40, Oct. 2025.