Kitāb istiqṣāʾ fī sharḥ ṭuruq al-ḥisāb fī masāʾil al-waṣāyā min ḥisāb al-jabr wa-al-muqābalah wa-ṭuruq al-handasah wa-al-ʿamal bi-ṭarīq al-khaṭaʾayn wa-al-dīnār wa-al-dirham _Kazimiya_Library of Ḥusayn Maḥfūẓ_unknown collection is part of Library of Ḥu