Adriansah Simatupang, et al. “Operational Delays in Automotive Service Contracts: A Fiqh Muamalah and Islamic Economic Law Analysis of an Ijarah Case”. Al-Amwal : Journal of Islamic Economic Law, vol. 10, no. 2, Jan. 2026, pp. 112-25, doi:10.24256/alw.v10i2.8956.