This work contains indexes of the proper names and the subjects of the Great Commentary of Fahr al-Din al-Razi, which comprises 32 volumes and forms an immense encyclopedia of the Middle Ages, invaluable for the knowledge of Classical Islam.The work is based on the Beirut edition (1981), but it contains a synopsis which allows for the use of the editions of Cairo (1933) and Teheran (n.d.).In the introduction, one finds a synthesis of the text's important elements, the statement of exegetical principles of the Great Commentary, and information relating to its chronology and authorship.