《北史·列传·卷七》
宣武帝和几位弟弟很友爱，元愉经常进出宫中，早晚住在那里，就像一家人。改任中书监。
帝留爱诸弟，愉等常出入宫掖，晨昏寝处，若家人焉。迁中书监。
Emperor Xuanwu and his younger brothers were loving, and Yuan Yu often entered and exited the palace, living there both early and late, just like a family. Appointed as Supervisor of the Secretariat.