al-Ḍarūrī fī al-manṭiq

The Compendium on Logic, dated 1157, is one of Ibn Rushd's earliest works: a short summary that runs through the whole extended Organon, including Porphyry's Isagoge and, as was usual in Arabic, the Rhetoric and the Poetics. It belongs to the first of his three kinds of commentary, the epitome (jawāmiʿ, mukhtaṣar), and gives what is 'necessary' of the art. The division of arguments into demonstrative, dialectical, rhetorical, poetical and sophistical, by the kind of premises they use, runs through all of Ibn Rushd's later writing on law and theology. It is the shortest route into Ibn Rushd's logic before his middle and long commentaries.

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