《新唐书·列传·卷三十七》
许敬宗等人捏造罪名诬陷柳跟妃嫔宫女私通，阴谋毒害皇帝，与褚遂良是同伙，定为大逆不道的罪行。
许敬宗等构奭通宫掖，谋行鸩毒，与褚遂良朋党，罪大逆。
Xu Jingzong and others fabricated charges to falsely accuse Liu of having illicit affairs with imperial concubines and palace maids, conspiring to poison the emperor, and being an accomplice of Chu Suiliang, branding him with the heinous crime of treason.