Rashid al-Din
Isa Kelemechi was also instrumental in reinforcing anti-Muslim prohibitions in the Mongol realms, such as prohibiting halal slaughter and circumcision, and, according to Rashid al-Din encouraged denunciation of Muslims. Isa Kelemechi also showed to Khubilai the Muslim precept of "Kill the polytheists, all of them", raising the suspicion of the Mongols towards Muslims. According to Rashid al-Din, as a result "most Muslims left Khitai".