Arabic version of the De ortibus et occasibus (Περὶ ἐπιτολῶν καὶ δύσεων; في الطلوع والغروب 87v, line 2, transcribed below or في الطلوعات والغروبات f. 109r, line 10, transcribed below) by the astronomer, mathematician and geographer Autolycus of Pitane (Αὐτόλυκος ὁ Πιταναῖος; أوطولوقس; fl. 300 BC), revised by Thābit ibn Qurrah (ثابت بن قرة; d. 901) and presented here in the edition of Naṣīr al-Dīn al-Ṭūsī (d. 1274).