《宋书·志·卷十五》
傅玄说： 如果皇上不除丧服而臣下除去丧服，造就是衹有父子之情，不存在君臣之义了，父子、君臣、夫妇之间三纲的道德便亏缺了。 
玄曰： 若上不除而臣下除，此为但有父子，无复君臣，三纲之道亏矣。 
Fu Xuan said: If the emperor does not remove his mourning clothes while his officials remove their mourning clothes, then it means that there is only the father-son relationship and no monarch-official relationship. The three relationships of father-son, monarch-official, and husband-wife will be deficient.