《资治通鉴·唐纪·唐纪六十八》
大将李茂勋本是回鹘阿布思的后裔，回鹘败亡时，投降卢龙节度使张仲武，张仲武收下他，并让他入军籍戍边，因屡立战功，赐予他李茂勋的姓名。
大将李茂勋，本回鹘阿布思之族，回鹘败，降于张仲武；仲武使戍边，屡有功，赐姓名。
General Li Maoxun was actually a descendant of Abusi of the Huihu. When the Huihu was defeated, he surrendered to Zhang Zhongwu, the Jiedushi of Lulong Circuit. Zhang Zhongwu took him in, registered him in the military and sent him to guard the border. Due to his repeated achievements, he was granted the name of Li Maoxun.