《魏书·列传·卷四十三》
太子元恂在东宫的时候，魏高祖想为他娶刘芳的女儿，刘芳以其女年龄相貌不合适推辞了，魏高祖叹服他的谦虚谨慎，改敕刘芳推举其宗族中的姑娘，刘芳推举了其族子刘长文的女儿。
太子恂之在东宫，高祖欲为纳芳女，芳辞以年貌非宜。高祖叹其谦慎，更敕芳举其宗女，芳乃称其族子长文之女。
When Crown Prince Yuan Xun was in the East Palace, Emperor Gaozu wanted to marry him to Liu Fang's daughter, but Liu Fang declined on the grounds that his daughter was not suitable in terms of age and appearance. Emperor Gaozu admired his modesty and prudence, and changed Liu Fang's edict to recommend a girl from his clan, and Liu Fang recommended his cousin Liu Changwen's daughter.