《旧唐书·列传·卷九十九》
杨国忠任宰相时，排挤不依附自己的人，于休烈被调出京师任中部郡太守。
杨国忠辅政，排不附己者，出为中部郡太守。
When Yang Guozhong was appointed prime minister, he squeezed out those who did not depends on him, so Yu Xilie was transferred out of the capital to serve as governor of Zhongbu County.