The present edition was originally prepared for a paper given at the international conference “Bridging the Worlds of Judaism and Islam” held at Bar-Ilan University on January 3-4, 2006 (“ʿAlī ibn Ṭaybughā’s commentary on Maimonides’ Mishneh Torah, Sefer ha-Maddaʿ, Hilkhot Yesodei ha-Torah I-IV: a philosophical ‘encyclopaedia’ of the 14th century”) and updated for a workshop on the “Heirs of Avicenna” held at the LMU in Munich, 12-13 March 2018. A full draft edition of the two commentaries by David b. Joshua Maimonides and ʿAlāʾ al-Dīn Abū l-Ḥasan ʿAlī ibn Ṭaybughā was prepared for the Research Unit Intellectual History of the Islamicate World (FU Berlin) (see the Research Unit’s report, version 2.1, 2012-08-22, p. 18). Selected chapters of this edition were read in the Arabic philosophy reading group convened by Charles Burnett at the Warburg Institute in London during Michaelmas term 2017.