Maigari Dutsinma, A. “The Codification of Hadith During the Era of Umar Bin Abdul Aziz: Methodological Transformation and Its Impact on the Development of Hadith Studies”. Demak Universal Journal of Islam and Sharia, vol. 3, no. 01, Feb. 2025, pp. 159-68, doi:10.61455/deujis.v3i01.275.