Shihab-ad-Din Abu’l ‘Abbas Ahmad Ibn Muhammad Ibn ‘Imad Ibn Ha’im al-Faradi known as Ibn Haim, al-Wasila fi ‘ilm al-hisab, 'Means in the Science of Arithmetic' (an abridgement of his larger work al-Wasila fi sina’at al-hawa’I), Egypt, Mamluk, 15th century

Arabic manuscript on paper, 24 leaves, 25 lines to the page, written in a scholar's hand in black ink, keywords picked out in red, catchwords, later Mamluk-style geometric and punched leather binding, with flap

In generally good overall condition, slight wear to binding, pages generally clean, minor stains, as viewed.
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Ibn Haim (circa 1355-1412) was born in Cairo and taught mathematics in the Salahiyya madrasa (founded by Saladin) in Jerusalem where he later died. The present work is an abridgement of the author's larger work al-Wasila fi sina’at al-hawa’I, 'Means in the Art of Mental [Reckoning]'. For more information see B.A. Rosenthal and E. Ihsanoglu, Mathematicians, Astronomers and other Scholars of Islamic Civilisation and their Works (7^th-19^th c.), Istanbul, 2003, pp.263-264, no.783. See Also Brockelmann, GAL, II, 153-155; S, II, 154-155.