This book is regarded as one of the most renowned explanatory texts of al-Muwaṭṭa’—magna opus of Mālik b. Anas al-Aṣbaḥī al-Madānī, the pre-eminent Imām of Madinah. Indeed, this elucidation is regarded as offering the broadest treatment to the highest standard with the richest detail, and as such is the most acclaimed commentary on the text. The author unveiled complex gems hitherto neglected by jurists, having unlocked and unravelled their mysteries, through insightful thought and incisive mind. Not only is al-Tamhīd one of the greatest texts on comparative jurisprudence (fiqh) in all its doctrinal schools, but also a book on Prophetic traditions (ḥadīth), the science of grading narrators (al-jarḥ wa al-ta‘dīl), history and biographies. Indeed, it sheds light on narrators, with successful forays into language, literature, and other disciplines. The reader of al-Tamhīd will no doubt find an indispensable scientific encyclopaedia, and attest to its premier place among texts on Islam. Indeed, the erudite Imam al-Ḥāfiẓ Abū Muḥammad Ibn Ḥazm al-Ẓāhirī quite accurately noted: “I know no equal in its treatment of understanding Prophetic tradition, let alone any that surpass it”. Al-Qāḍī ‘Iyāḍ said: “Abū ‘Umar authored the book, al-Tamhīd… and it is a book that none have bested in its approach”. Its author, al-Imām al-Ḥāfiẓ Ibn ‘Abd al-Barr al-Andalusī, requires no introduction. He spent a large part of his life gathering the content for al-Tamhīd, preparing its chapters and studies, and referring to hundreds of sources in the areas of jurisprudence, prophetic tradition, language, history, and biographies. Professor Bashar Awwad Marouf has critically edited this seminal text, applying the latest scientific approaches. In this pursuit, he gathered many scattered manuscript copies from Morocco, Turkey, Iraq, Saudi Arabia, Egypt, Ireland, and other countries.