《新唐书·列传·卷三十》
又颁发册书授予长孙无忌为司空，主持门下省、尚书省的政务，长孙无忌辞谢，又托付高士廉口头面奏太宗说 ：以皇室外戚的身份占据三公的高位，心怀不满的人会说皇上为皇后家谋私利。 
进册司空，知门下、尚书省事，无忌辞，又因高士廉口陈 以外戚位三公，嫌议者谓天子以私后家 。
Then he issued an imperial edict giving Chāngsūn Wújí the title of Minister of Works, who was to be responsible for the political affairs of the Department of the Imperial Secretariat and Department of State Affairs. Chāngsūn Wújí declined and delegated Gao Shiliān to report to Taizong verbally: “As a relative of the emperor by marriage, occupying such a high official post of the Three Ducal Ministers, people who are dissatisfied would say that the emperor is showing favoritism toward his wife’s family.”