《魏书·列传·卷二十九》
源子恭随即上表请求把爵位转授给他的第五个儿子源文盛，皇帝准许其请求。
子恭寻表请转授第五子文盛，许之。
Yuan Zigong immediately submitted a memorial to the emperor, requesting that the title of nobility be transferred to his fifth son Yuan Wensheng. The emperor agreed to his request.