M. Bahar, F. Hamzah, and I. Roozman, “Buying and Selling Practices in the Malimit Customary Law as Examined by the Theory of Ba’i Muzayyadah: Case Study in Cubadak Timur Village, Duo Koto District, Pasaman Regency”, IJSOC, vol. 8, no. 2, pp. 186-205, Jun. 2026.