Zakia, A., Rizal, S. and Aziz, R. M. (2026) “Transformation of Wadiah Contract in the Sharia Financial System and Its Impact on Hajj Fund Management”, Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE), 9(2), pp. 14614-14623. doi: 10.31538/iijse.v9i2.10253.