《资治通鉴·汉纪·汉纪五十三》
正好李送来食物，郭汜妻把豆豉说成毒药，挑出来给郭汜看，说： 一群鸡中容不下两只公鸡，我实在不明白将军为什么这样信任李。 
会傕送馈，妻以豉为药，擿以示汜曰： 一栖不两雄，我固疑将军信李公也。 
Just then, Li sent over some food, and Guo Si's wife claimed that the fermented black beans were poison and showed them to Guo Si, saying: A group of chickens can't accommodate two roosters, and I really don't understand why the general trusts Li so much.