《周礼·秋官司寇·士师&朝士》
讶士掌理四方诸侯的诉讼，向诸侯国解释刑法条文议及制定刑法的本意。
讶士掌四方之狱讼，论罪刑于邦国。
Yashi handled the lawsuits of the feudal lords, interpreting the provisions of the criminal law to the feudal states and discussing the intention behind the drafting of the criminal law.