Early Quranic manuscripts
The Topkapi manuscript is an early manuscript of the Quran dated to the early 8th century. This manuscript is kept in the Topkapi Palace Museum, Istanbul, Turkey. It was wrongly attributed to Uthman Ibn Affan (d. 656), but judging from its illumination, the Topkapi manuscript does not date from the period (mid 7th century) when the copies of the Caliph Uthman were written.
Topkapı Palace
The Mosque of the Ağas ("Ağalar Camii") is the largest mosque in the palace. It is also one of the oldest constructions, dating from the 15th century during the reign of Mehmed II. The Sultan, the ağas and pages would come here to pray. The mosque is aligned in a diagonal line in the courtyard to make the minbar face Mecca. In 1928 the books of the Enderûn Library, among other works, were moved here as the Palace Library ("Sarayı Kütüphanesi"), housing a collection of about 13,500 Turkish, Arabic, Persian and Greek books and manuscripts, collected by the Ottomans. Located next to the mosque to the northeast is the Imperial Portraits Collection.