《南史·列传·卷二十八》
后来沈攸之事件发生，高帝召褚彦回谋划，褚彦回说： 西夏发难，事情必定不会成功，您应当首先防备内部。 
及沈攸之事起，高帝召彦回谋议，彦回曰： 西夏衅难，事必无成，公当先备其内耳。 
Later, when the Shen Youzhi incident occurred, Emperor Gao summoned Chu Yanghui to plan it. Chu Yanghui said: Xixia launched an attack, the event will surely not succeed, and you should first be on your guard against the enemy within.