《北史·列传·卷四十五》
后来，闵帝想念李植等人，常想召见他们，宇文护便谏止说： 天下最亲密的，都不超过兄弟。
后帝思植等，每欲召之。护谏曰： 天下至亲，不过兄弟。
Later, Emperor Min missed Li Zhi and others, and he often wanted to summon them back. Yuwen Hu advised him, "The closest people in the world are no more than brothers. If brothers suspect each other, how can others become intimate? I am only afraid that after I am eradicated, the treacherous villains will achieve their goal. It will not only be detrimental to Your Majesty but also to the country." As he spoke, he wept and did not stop for a long time.