الحياني أ.س.ن. 2019. The Role of Fatwa and Shari’a Supervisory Boards in Controlling the Transactions of Islamic Banks: A Study in Shari’a and the Yemeni law. Journal of Social Studies. 24, 4 (Feb. 2019), 57–87. DOI:https://doi.org/10.20428/jss.v24i4.1476.