M. K. Mubarraq, I. Ismail, and L. . Ukhti, “: Legal Pluralism in Determining the Start of Ramadan: The Authority of the Book Matla’ul Badrayn as ‘Living Law’ in Indonesian Society”., Qisthosia: j. Syariah dan huk., vol. 7, no. 1, pp. 1–12, Jun. 2026.