Джувейни
Kuchlug was from the Naiman tribe, which were Nestorians. His wife, daughter of the Gur-khan, was a Buddhist, and convinced him to adopt Buddhism. However, in contrast to the policy of religious tolerance of the previous Qara Khitai rulers, once Kuchlug assumed power, he was reported to have instituted anti-Muslim policies. According to Persian historian Ata-Malik Juvayni, he demanded that a town’s Muslim population should make a choice between either converting to Nestorianism or Buddhism, or donning Khitan garment, of which the population would choose to wear Khitan clothing. He was also reported to have crucified the imam of Hotan onto the door of his madrassa.