Ahmad, A., Zubair, and A. B. Fatmal. “Analisis Linguistik Hadis Awal Ramadhan: Komparasi Fa In Gumma Dan Fa In Gubiya Serta Implikasi Hisab-Istikmal: Linguistic Analysis of Hadith on the Beginning of Ramadan: A Comparison of Fa in Gumma and Fa in Gubiya and Its Implications for Hisab-Istikmal”. AL ISNAD: Journal of Indonesian Hadith Studies, vol. 7, no. 1, June 2026, pp. 53-69, doi:10.51875/alisnad.v7i1.1134.