《北史·列传·卷四十四》
至于魏收所著的《后魏书》中讳去太子的名字，写出天子的名字，过失则更加严重。
至于魏收讳储君之名，书天子之字，过又甚焉。
As for Wei Shou's Book of Wei, which avoids mentioning the name of the crown prince and writes the name of the emperor, the error is even more serious.