Cod.: paper, at least 149 ff. (foliated with Arabic-European numerals at the top center of rectos; ff. 88–108 also numbered separately from 1 to 23 (skipping 8 and 9) with Hindu-Arabic numerals [Persian variants] in the top left corner of rectos; the folio number ‘14’ is also used for an inlaid sheet preceding f. 14 and here referred to as 14^bis; catchwords, sometimes hardly visible in the shadow of the fold). At least four different hands. First hand (2r–25r and 58r–72r): a clear naskh; almost fully dotted ductus, few vowel marks, hamzas, rare shaddas, occasional large bowls; basmalas in bold kūfī, chapter headings presumably in red; 21 lines per page. Second hand (25v–33v): a quick naskh; almost fully dotted ductus, some vowel marks, no shaddas or hamzas; 22 lines per page. Third hand (34r–57v): a naskh with tendency to nastaʿlīq, sometimes written in very small letters; almost fully dotted ductus, some vowel marks, no shaddas or hamzas; 19–26 lines per page. Fourth hand (88v–96r): a sometimes dense naskh; almost fully dotted ductus, some vowel marks, shaddas and hamzas; 23 lines per page. The third, fourth and fifth works are surrounded by a thin rule-border, except for f. 51. Codex seemingly in satisfactory condition; worm damage in the upper and lower margins, sometimes affecting the body text; some pages partially restored. Dimensions: c. 20×10 cm. Leather covers (Rehatsek). Type III binding. This codex is probably a composite manuscript, i.e., separate original parts were bound together at a later point.

Cont.: astronomy, mathematics (based on the accessible part of the manuscript). — Index: Kushyār b. Labbān, Fī ʿilm al-Asṭurlāb wa-ʿamali-hi (2r; incomplete); Kushyār b. Labbān, Kitāb al-Asṭurlāb (2v–25r); chapters on the astrolabe from several other works (25v–33v); Sinān b. Yaḥyā al-Khurāsānī, Risālat ṣifat ḥuqq al-qamar (34r–44v); unknown, Risālah fī stikhrāj kayfīyyat al-ʿamal bi-l-asṭurlāb al-qamarī al-masaṭūḥ (44v–45v); unknown, Kitāb al-ʿamal bi-l-rubʿ (46r–57v); Ptolemaica (58r–72r); Qusṭā b. Lūqā, Kitāb al-ʿAmal bi-l-kura al-falakiyya (72v–87v; see GAS VI, p. 181); Kushyār b. Labbān, Uṣūl ḥisāb al-hind (88v–107r); Abū l-Wafāʾ al-Būzjānī, al-Zīj (107v–126r; incomplete, see GAS VI, p. 224); unknown, Kitāb al-takmila fī stikhrāj al-ʿadadayn al-mutaḥābbayn (129v; see GAS V, p. 402); Muḥammad b. Mūsā, Ruyʾat al-hilāl ʿalā raʾy Abī Jaʿfar Muḥammad b. Mūsā b. Shākir (142r; see GAS VI, p. 147); fragment of Kushyār b. Labbān, al-Zīj al-Bāligh (148v–149r; see Bagheri). Blank: 14^bisv.

Bibl.: Edward Rehatsek, Catalogue Raisonné of the Arabic, Hindostani, Persian, and Turkish Mss. in the Mulla Firuz Library, Bombay: Managing Committee of the Mulla Firuz Library, 1873, pp. 43–44 (no. 86); GAS VFuat Sezgin, Geschichte des arabischen Schrifttums, Vol. V: Mathematik bis ca. 430 H., Leiden: Brill, 1974, pp. 401, 402, and 404; GAS VIFuat Sezgin, Geschichte des arabischen Schrifttums, Vol. VI: Astronomie bis ca. 430 H., Leiden: Brill, 1978, pp. 101, 147, 181, 224, 248–249, 283, and 288; Richard Lorch, ‘The “Meteoroscope” Attributed to Theon of Alexandria’, in I. International Congress on the History of Turkish-Islamic Science and Technology. İstanbul Teknik Üniversitesi, 14-18 September 1981. Proceedings, Istanbul: İstanbul Teknik Üniversitesi. Bilim ve Teknoloji Tarihi Enstitüsü, 1981, vol. I, pp. 33–38; Mohammad Bagheri, ‘A Chapter from Kushyār’s Lost Zīj’, in Moustafa Mawaldi and Yasmin Shwash (eds), Proceedings of the Seventeenth Annual Conference for the History of Arabic Science. Sweida – Syria. April 20–22, 1993, Aleppo: Aleppo University Publications / Institute for the History of Arabic Science, 2007, pp. 471–476, here pp. 471–472 (with an image of two pages from the manuscript on p. 474). — Islamic Scientific Manuscripts Initiative: https://ismi.mpiwg-berlin.mpg.de/codex/202231.