Kitāb qurrat al-ʻayn fī tasyīr al-nayyirayn /
كتاب قرة العين في تسيير النيرين / | Qurrat al-ʻayn bi-tasyīr al-nayyirayn
Catalog Record - Electronic Resource Available
The text is principally based on the writings of ʻAlī ibn Ibrāhīm Ibn al-Shāṭir (1304-1375), as the introduction mentions. The colophon says that the text was copied from a manuscript with many errors written in a bad hand.