The historian Hafez Abru (died in 1430) of the Timurid Dynasty period wrote the historical work Magma' al-Tawdrix (“Historical Collection”), which consists of four parts. In the tribal records of the third volume of this work, information concerning the history of the Timurid Dynasty, which cannot be seen in other historical materials, has been confirmed. This paper will discuss and analyze a manuscript of Magma' al-Tawdrix containing nine tribal records concerning the Timurid Dynasty, which is kept in the library of the Topkapi Saray Museum of Istanbul. As a result, it is clear that Hafez Abru wrote the tribal records in the year A. H. 829 (1425/26), with the following two types of tribes in mind:
(1) tribes which have marital relations with the Timurid family
(2) new tribes of the 14th century formed from various Mongolian tribes