The article consists of three parts. The first examines the Arabic translations of Aristotle’s Physics; the second analyses the history of the translation by Isḥāq Ibn Ḥunayn, that is the only extant and was subject to various commentaries; and the third focuses on the beginning of Book VII. There are two versions of the Greek text for this passage, and there is evidence that Isḥāq Ibn Ḥunayn relied on a text closer to β-version for his translation.