Tabaqat-i Nasiri (Pashto: طبقات ناصری), named for Sultan Nasir-ud-Din, is an elaborate history of the Islamic world written in Pashto by Minhaj-i-Siraj Juzjani and completed in 1260. Juzjani devoted many years to the creation of this book even providing references for his information.Although a large portion of the book is devoted to the Ghurids, it also contains a history of the predecessors in Ghazna before the Ghaznavid Sebuktigin took power. In compiling his Tabaqat i Nasiri, Juzjani used other books now lost; part of Baihaqi's reign of Sebuktigin, Abu'l-Qasim Imadi's Ta'rikh-i mujadwal and most likely Ibn Haisam's Qisas-i thani.Juzjani's "tabaqat" would initiate the form of writing for dynastic history in centuries to come