《三国志·魏书·满田牵郭传》
田豫认为各少数民族团结一心对中国不利，于是设计离间，让他们彼此猜忌，互相进攻。
豫以戎狄为一，非中国之利，乃先构离之，使自为雠敌，互相攻伐。
Tian Yu believed that the unity of all ethnic minorities was not good for China, so he designed to alienate them, making them suspicious of each other and attacking each other.