This paper analyzes the critical scholarly debate between Joseph Schacht and Muhammad Mustafa al-A'zami regarding the origins and authenticity of Islamic jurisprudence, particularly focusing on the development of hadith literature and the isnad (chain of transmission) system. By examining Schacht’s skeptical historical approach and Al-A'zami’s methodological rebuttals, the article evaluates the implications of their positions on the study of Islamic law. The study adopts a comparative textual methodology and aims to highlight the enduring impact of this debate on contemporary Islamic legal scholarship.

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