《周书·列传·卷三十》
四年，产担将向东征伐，朝廷臣子未有知情的人，派遣纳言卢韫等先后乘坐驿马，三次到于翼那裹向他询问计策。
四年，高祖将东伐，朝臣未有知者，遣纳言卢韫等前后乘驿，三诣翼问策焉。
In the fourth year, Emperor Tan will lead the army to the east. No one in the court knew about it, so he sent the Nayan Lu Yun and others to ride the post horse to Yu Yi three times to ask him for advice.