Isman Ahadi Lebu Raya, and Ahmad Fauzi Tidjani. “Halal Business Activity Efforts by Applying the Principle of Muamalah in Islamic Economic Transactions”. Values: Jurnal Kajian Islam Multidisiplin, vol. 1, no. 3, Nov. 2024, pp. 140-7, doi:10.61166/values.v1i3.17.