Marwadi, & Labib, M. (2025). The Fiqh of Hisab Rukyat of Modernist Mass Organizations: A Study of Muhammadiyah and Al-Irsyad Al-Islamiyah Thought on the Hijri Calendar. International Journal of Social Science and Religion (IJSSR), 6(3), 391–406. https://doi.org/10.53639/ijssr.v6i3.377