《汉书·传·谷永杜邺传》
《袄辞》中说： 门闩松动锁簧丢失，君主暴虐无德，大臣行为有失，就有乱臣谋划篡位的凶险。 
《訞辞》曰： 关动牡飞，辟为无道，臣为非，厥咎乱臣谋篡。 
The Poetry Classic says: If the door-bolt has come loose and the key has been lost, the sovereign is cruel and unvirtuous, and the ministers are guilty of misconduct, then there is the danger of seditious officials plotting to usurp the throne. 