In addition to these indications and probabilities, Ibn Tumart's influence by Al-Ghazali in many of his opinions and in aspects of his intellectual methodology, as we will see when analyzing his works, supports the idea that he may have met him, studied under him, and taken from him, especially in the rational sciences in which he excelled, such as Usul (principles) and Logic, and criticism of philosophy.

Both Ibn Khallikan and Ibn Al-Athir mentioned that Ibn Tumart studied under Al-Kiya Al-Harami. Al-Kiya was a scholar in Fiqh (jurisprudence), Usul, Dialectics, and memorization of Hadith. These are the sciences that Al-Mahdi took from him, as well as Khilafiyat (disputes).

Mubarak bin Abd al-Jabbar: Al-Marrakshi mentioned that Ibn Tumart heard Hadith from him. Mubarak was a prolific Hadith scholar. His studies under him were not long, as he passed away in 1106 AH. At that time, Ibn Tumart had only spent a year or part of a year in Baghdad.

Abu Bakr Al-Shashi: Al-Marrakshi mentioned that he studied under him in Usul al-Din (principles of religion). Al-Shashi was appointed in Fiqh in Iraq after his teacher Abu Ishaq Al-Shirazi. He became the head of the Shafi'i school and authored his famous book "Al-Mustadhhari" in Fiqh.

Abu Bakr Al-Tartushi: A number of historians mentioned that he studied under him, including Abu Al-Hasan Ali bin Muhammad bin Ali Al-Tabari, known as Imad al-Din.