Commentary on The Book of the Kings of Truth (Hâshieh bar Haqq-ol Haqqâieq) is a postscript by Ostad Elahi for "The Book of the Kings of Truth," a mystical epic of 15,000 verses composed in just forty days by his father, Haj Ne'mat, circa 1912. Relaying the spiritual history of the world and presenting an account of the successive manifestations of the Divine Essence in each era, Ostad's commentary sheds new light on his father's epic by addressing several important issues regarding the determination of places and dates, the historical accuracy of certain events, and the concept of divine manifestation. Overall, his analysis establishes that "The Book of the Kings of Truth" is not a compilation of legends, but rather a detailed account of well-founded spiritual realities.