《汉书·传·武五子传》
刘胥又听说朝廷立了太子，就对姬妾南等人说： 我永远不能被立为帝了。 
胥又闻汉立太子，谓姬南等曰： 我终不得立矣。 
When Liu Xu heard that the imperial court had appointed a crown prince, he said to his concubines, Nan and the others, “I will never be made emperor.”