The Khitan in northern China were known as خطا in Arabic and are mentioned by Muslim chroniclers as having fought against Muslims and founded the Qara Khitai. After the destruction of the Qara Khitai realm by the Mongols under Genghis Khan in 1218, the former land of the Qara Khitai became absorbed into the Mongol Empire. A small part of the population under Buraq Hajib settled in the Persian province of Kirman, converted to Islam, and established a localdynasty there.
Early years
Buraq Hajib is thought to be a member of Qara Khitai dynasty and a son of a Khitan noble Kulduz. Buraq Hajib and his brother Hamīd Pur Tayangu were detained or captured by Muhammad of Khwarezm in 1210, and were given important posts. He was initially in the service of Khwarazm prince Ghiyas-ad-Din Purshah, under whom he was nicknamed Qutlugh Khan. He was soon appointed as the commander of Isfahan for Khwarazmshahs. He arrived at Kerman at first as a commander of Purshah's army, joining him in the battle against Salghurid atabeg Sa'd I. However, he had an argument with Purshah's vizier Tajaddin Karim ash-Sharq and left for India hearing approachment of a Mongol army under command of Tolun Cherbi. While on his way to India, Buraq was attacked by the local governor of Kirman - Shuja ad-Din Abul-Qasim, but Buraq managed to defeat him thanks to defection of Turks and decided to start a siege of Kirman. He had submit to Jalal ad-Din at first, offering her daughter's hand, who in turn helped him to conquer Kirman. He quickly got involved in local politics, aiding Nasrid emir Ali b. Harb in his struggle to throne in 1225.
Reign
In 1228 Khwarazm prince Ghiyas-ad-Din Purshah sought refuge in Kirman after incurring the wrath of his brother, Sultan Jalal ad-Din. Using favorable situation, Buraq forced him to give his mother's hand, marrying her. After a revelation of conspiracy involving two Khitan nobles and Ghiyas-ad-Din. he and his mother was soon murdered by Buraq. Sometime later Buraq converted to Islam and requested the Abbasid Caliph for investiture and was granted a title of Qutlugh Sultan. His next action was to ally to Atabegs of Yazd through marriage. Buraq later submitted to the Mongol Empire, and he and his successors were conferred the title of Qutlugh Khan, and allowed to ruled as vassal of the Mongols. Throughout its rule the dynasty continued to be known as Qara Khitai. There were a total of 9 rulers of the Kirmanid dynasty, two of whom were female. He sent his son Rukn al-Din Mubarak Khwaja to Ögedei's court just before his death in 1234/5. He was succeeded by his nephew Qutb al-Din Mohammad.
