《北史·列传·卷六十三》
到朝堂求见，对宣帝说： 乐运知道上书奏闻难免一死，因此就不顾自己的性命，想借此博取后世的名声。
诣閤请见，言于帝曰： 乐运知书奏必死，所以不顾身命者，欲取后世名。
He went to the imperial court to have an audience with the emperor, and said to Emperor Xuan: Leyun knows that memorializing you is no different from seeking death, so he has disregarded his own life and wanted to use this to gain a reputation with posterity.