This work is both an introduction to the genre of classical tafsīr and a detailed study of one of its major architects, al-Thaʿlabī (d. 427/1035). The book offers a detailed study of the hermeneutical principles that governed al-Thaʿlabī's approach to the Qurʾān, principles which became the norm in later exegetical works. and a detailed study of one of its major architects, al-Tha`labi (d. 427/1035). The book offers a detailed study of the hermeneutical principles that governed al-Thaʿlabī's approach to the Qurʾān, principles which became the norm in later exegetical works.