![Risālah sī faṣl رساله سي فصل Ṭūsī, Naṣīr al-Dīn Muḥammad ibn Muḥammad طوسي، نصير الدين محمد بن محمد [‎58r] (4/42)](https://iiif.qdl.qa/iiif/images/81055/vdc_100024386010.0x000001/Add MS 23569_0130.jp2/full/!1200,1200/0/default.jpg "Risālah sī faṣl رساله سي فصل Ṭūsī, Naṣīr al-Dīn Muḥammad ibn Muḥammad طوسي، نصير الدين محمد بن محمد [‎58r] (4/42)")
Risālah sī faṣl رساله سي فصل Ṭūsī, Naṣīr al-Dīn Muḥammad ibn Muḥammad طوسي، نصير الدين محمد بن محمد [58r] (4/42)
The record is made up of Ff. 56v-77r. It was created in 25 Dhū al-Ḥijjah 1055. It was written in Persian. The original is part of the British Library: Oriental Manuscripts.
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Treatise on practical astronomy (تقويم) divided into thirty sections (سي فصل) composed in 658/1260 (see Amīn, Mustadrakāt a‘yān al-shī‘ah , p. 233) by Naṣīr al-Dīn al-Ṭūsī (نصير الدين الطوسي, d. 1274). The full title of the work is Sī faṣl dar ma‘rifat-i taqvīm (سي فصل در معرفت تقويم).
The text contains thirteen complete diagrams and tables (ff. 58v, 60r, 61r, 63r, 63v, 64r, 68r, 69r, 69v, 70r, 71v, 72r, and 72v), with an unfilled space for a further diagram (f. 68v), and a table into which no data has been entered (f. 70v).
The copy was completed on 25 Dhū al-Ḥijjah 1055/11 February 1646 (see colophon Section at the end of a manuscript text. , f. 77r, lines 18-19, transcribed below).
Begins (f. 56v, lines 10-12):
الحمد لله رب العالمين والصلوة والسلم على خير خلقه
محمد وآله أجمعين وبعد اين مختصر يست در معرفت
تقويم مشتمل بر سي فصل ...
Ends (f. 77r, lines 13-17):
... اما در بيع منصرف از سعدي
ودر شرى بايد كه متصل بسعدي بود وبرين قاس وما
درين مختصر بد ينقدر اختيار كنيم پس
اکر کسى زياده ازين خواهد بحوع به
كتب مبسوطه اين علم كند والله
اعلم
Colophon Section at the end of a manuscript text. (f. 77r, lines 18-19):
... تمام شد بتاريخ 25
ذي الحجة سنة 1055
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Risālah sī faṣl رساله سي فصل Ṭūsī, Naṣīr al-Dīn Muḥammad ibn Muḥammad طوسي، نصير الدين محمد بن محمد [58r] (4/42), British Library: Oriental Manuscripts, Add MS 23569, ff 56v-77r, in Qatar Digital Library <https://www.qdl.qa/archive/81055/vdc_100044787805.0x000083> [accessed 3 April 2025]
https://www.qdl.qa/en/archive/81055/vdc_100044787805.0x000083
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