This study, relied mainly on the legal texts and hadith collections dating from the eighth and ninth centuries, provides an illuminating account of how rules regulating various transactions were formed, developped and synthesized in the formative period of Islamic law.

Hiroyuki Yanagihashi, M.A. (1983) in Literature, the University of Tokyo, is Professor at the Graduate School of Humanities and Sociology at the University of Tokyo. He has published articles and monographs on Islamic law and legal hadith, including Studies in Legal Hadith (Brill, 2019).