A list of the Mahdi's books. It was mentioned at the end of the Muwatta' by him, under the title: "The end of the Muwatta' and the beginning of the commentaries, and praise be to God for His help." It appears that this list includes what is contained in the collection "The Most Cherished That Is Sought" of book and treatise titles, with some additions, details, and changes in order. Perhaps it is an index for another copy of this collection that was with the Muwatta' in a single volume. Then the separation occurred between them, so it was preserved and faded, and only its index remained.

Secondly, what is mentioned in the books of history and biographies of the Mahdi's works, their descriptions, and references to their content.

Through these three sources, we can identify the Mahdi's works in terms of their number and their scholarly interests. The following is a classification of these works according to the sciences they cover.

Classification of Ibn Tumart's Works by Sciences: Ibn Tumart's works and writings cover a range of sciences that he studied and excelled in. We can classify them according to the following axes: Principles of Religion, Jurisprudence and its Principles, Hadith, Call and Preaching. Perhaps he had treatises that were not clearly related to these axes, so we will include them within the most relevant ones.

A. Principles of Religion: The Muwatta': Ibn Tumart (62). (Moroccan manuscript) (134).

This is indicated by what is mentioned on the first page of this book, the Muwatta', from the Hadith of the Messenger of God, peace be upon him. (63).

Classification of the Infallible Imam, the Known Mahdi. It also contains all the blessed commentaries dictated by him. Al-Hasan thought that the list contained lost works, but the truth is that they are the existing works in the collection "The Most Cherished That Is Sought." (Revival of Scientific Heritage (Mahdi bin Tumart's Muwatta'): Al-Abadi) (60).

We will use this list below under the name "List of Commentaries." (64).

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