拍品专文
The author of the first of the works in this volume was Sinan al-Din Yusuf bin Khidr Beg bin Jalal al-Din (d. 1486), also known as Khawaja Pasha. He was vizier to the Ottoman Sultan Mehmet II, Mehmet the Conqueror. He worked in Istanbul and Edirne and was a historian theologian, mathematician and astronomer (B.A. Rosenfeld and E. Ihsanoglu, Mathematicians, Astronomers and Other Scholars of Islamic Civilisation and their Works (7th-19th), Istanbul, 2003, no.858, p.290). The last page of text praises Sultan Mehmet II.