The Risāla of al-Shāfiʿī (d. 204/820), the earliest preserved work of Islamic legal theory, has been understood in previous scholarship as either the elaboration of a hierarchy of sources of law (Qurʾān, Sunna, consensus, and analogical reasoning) or an extended defense of the Sunna. Through a careful rereading of this celebrated text, this book offers a comprehensive reinterpretation of the Risāla, in which Shāfiʿī formulated an all-encompassing hermeneutic that portrays the law as a tightly interlocking structure organized...