《新唐书·列传·卷四十六》
皇帝令有司审查，宰相卢怀慎等人上奏 ：刘幽求行为轻慢不恭，有失大臣之礼，有违职分之节。 
诏有司鞫治，宰相卢怀慎等奏言： 幽求轻肆不恭，失大臣礼，乖崖分之节。 
The emperor asked authorities to check. Prime Minister Luo Huai-gong and others wrote to the emperor: Liu Youqiu was arrogant and rude, not befitting a courtier.