 Fakhr al-din al-Razi, a faithful follower and commentator of Avicenna and his works as an interpreter of Aristotle, was explicitely mentioned and employed as a source by three 14th-century “Jewish Avicennist” authors (see above, 5). Judah ben Solomon Natan mentioned al-Razi’s Oriental Researches (al-Mabahit al-mashriqiyya) as one of his reference points in the introduction to his translation of al-Ghazali’s Intentions of the Philosophers. Todros Todrosi put some passages of the same work, which he personally translated from Arabic into Hebrew, in the margin of his own translation of pseudo-Farabi’s work, The Sources of Questions: they are al-Razi’s definition of the concept of “notification” or “definition”, and a metaphysical passage about his “Avicennian” explanation of the chain of the emanations of the intellects from the First Intellect, which Todros compares with a similar passage taken from Avicenna’s The Salvation. Moreover, in his philosophical anthology Todros mentions other passages about logic allegedly taken from al-Razi, which have not yet been identified. Finally, Joseph Ibn Waqqar explicitely quotes two passages of al-Razi’s commentary on Avicenna’s Remarks and Admonitions, the Core of the Remarks (Lubab al-isharat) (see Vajda 1962, 125-126).