خزائن كتب المساجد و الأربطة البغدادية في كتاب تلخيص مجمع الآداب في معجم الألقاب لابن الفوطي (ت723ه-1323ه)

The Abbasid period is one of the most fertile Islamic ages attention to the bookcases have been prominent of each of the caliphs, ministers and dignitaries acquisition of books and stop in the coffers of public books, so that the largest number of students of science to see them. Baghdad's portfolio of scientific status in the late Abbasid times, which was characterized by weakness and division. Has embraced many of the coffers of public books from the first educational institution, the mosques to the smallest educational institution, the ligaments. The scientists stopped their books and their private libraries after their death to those libraries (such as the geographical historian Yacout Hamawi to the mosque Zaidi), and many scientists. Baghdadi ligaments remained until the Mongol era