Shady Hekmat Nasser, Ph.D. (2011), Harvard University, is a senior Lector of Arabic at Yale University.

• IntroductionChapter 1: The variant readings and the sabcat aḥruf of the Qur’ānChapter 2: Ibn Mujāhid and the canonization of the seven Chapter 3: Ḥadd al-Qur’ān and the tawātur of the canonical Readings Chapter 4: The transmission of the canonical Readings and the emergence of Shawādhdh Chapter 5: The Nature of the Qur’ānic variants Conclusion and future Research Bibliography

“…a detailed and well written study.”Shahrul Hussain in The Muslim World Book Review34.4 (2014).“Nasser’s work is thorough and thought provoking; his efforts to understand the history of the transmission of the variant readings of the Qurʾān have surely paid off.”Ghassan el Masri in Al-Abhath 62-63 (2014-2015), 170-173."Cet ouvrage important souligne la nécessité d’une édition véritablement critique du Coran, contenant des variantes de lecture, en même temps qu’il en fournit des éléments, théoriques et empiriques, indispensables à sa réalisation."J. Dean in: REVUE D’HISTOIRE ET DE PHILOSOPHIE RELIGIEUSES, 2014, Tome 94 n° 4.