《旧唐书·列传·卷一百四十》
若思到达卫州后，上奏别驾李道钦犯法的状书，请求加以审讯。
若思至州，举奏别驾李道钦犯状，请加鞫讯。
When Ruosi arrived in Weizhou prefecture, he submitted a document to the throne accusing the Prefectural Administrator Li Daoqin of breaking the law, requesting that he be tried.