《元史·列传·卷八十二》
伯颜斥之说： 我是天子命官，不幸失守，按理当以死报国，怎能跟着你们造朝廷的反呢？ 
伯颜诃善曰： 我天子命官，不幸失守，义当死，肯从汝反乎？ 
Boyan scolded him and said: "I am an official appointed by the emperor. It was my misfortune that I lost the city. According to the rules, I should die for my country. How can I follow you to rebel against the imperial court?"