Tio Sopa, A., Mutiara Umi, O. and Mirabai Bhhana 2023. Implementation of Istishna Akad in Online Sale and Purchase Transactions. Sharia Economic and Management Business Journal (SEMBJ). 4, 1 (Feb. 2023), 5-11. DOI:https://doi.org/10.62159/sembj.v4i1.1181.