《魏书·列传·卷九》
有关官员上奏太常卿刘芳议论元勰的谧号说： 王自幼德行优异，天资纯孝，聪明过人，求学不必老师教授。
有司奏太常卿刘芳议勰谥曰： 王挺德弱龄，诞资至孝，睿性过人，学不师授。
Grand Master of Ceremonies Liu Fang commented on Yuan Xie's posthumous name, saying: "The prince showed profound virtue and inborn filial piety. He was remarkably intelligent, and did not need official tutors."