《北史·列传·卷十一》
于忠知道说他坏话的人很多，担心免不了有祸患，希望能够回京，以便自己想法自救。
忠以毁之者多，惧不免祸，愿还京，欲自营救。
Yu Zhong knew that many people spoke ill of him, and he was worried that he could not avoid disaster. He hoped to return to the capital to save himself.