Text rubricated and overlined in red; marginal commentary in Turkish in hand of copyist (same as that of Mich. Isl. Mss. 750,2-4).Date based on that in colophons of Mich. Isl. Mss. 750,2-3.Pp. [1-5]. Bound with: [2] Badr al-Dīn Muḥammad ibn Muḥammad Sibṭ al-Māridīnī, Kifāyat al-qanūʻ fī al-ʻamal bi-al-rubʻ al-maqṭūʻ, pp. [6-24]; [3] Badr al-Dīn Muḥammad ibn Muḥammad Sibṭ al-Māridīnī, Risālah fī al-ʻamal bi-al-rubʻ al-mujayyab, pp. [25-38]; [4] Fāʾidah fī maʻrifat waqt al-imsāk fī ḥiṣṣat al-fajr, pp. [39-44].Assorted material on timekeeping and the Coptic calendar.