The last four sections of the first book of Abū al-Barakāt al-Baghdādī’s summa, entitled Kitāb al-Mu‘tabar, deal with dialectics, sophistical refutations, rhetoric, and poetics in full line with Aristotle’s Organon. However, they are not so much based on Aristotle’s works, but on a work of the young Ibn Sīnā, namely al-Ḥikma al-‘Arūdiyya. Both texts have much in common not only in their structure, but also in their very wording. The article presents a basic survey of the correspondences for all four sections and also highlights the most significant differences. However, important part of these differences has a counterpart in an (incomplete) logical text, which is present in the manuscript Nuruosmaniye 4894 and which is, in turn, very close...