Syifaun Nada, “Concept of Buying and Selling Transactions UsingQuick Response Indonesian Standard Perspective of DSN MUI Fatwa No: 116/DSN-MUI/IX/2017 Concerning Sharia Electronic Money”, JIQSI, vol. 1, no. 2, pp. 65–81, Dec. 2023, doi: 10.64341/jiqsi.v1i2.13.