Chagatai Khan
Muslims viewed Chagatai Khan with negativity and hostility because Chagatai Khan strictly enforced Mongol Yasa law against Islamic Shariah law banning Halal animal slaughter and Islamic prayer ritual ablution as well as the Islamic legal system. The Uyghur steward Vajir was accused of poisoning Chagatai Khan to death in 1242 by his wife Yisulun.