《史记·十二本纪·项羽本纪》
大司马曹咎原来是蕲县的狱掾，长史司马欣原来是栎阳的狱吏，两人曾对项梁有过恩德，因此项王信任他们。
大司马咎者，故蕲狱掾，长史欣亦故栎阳狱吏，两人尝有德於项梁，是以项王信任之。
Grand Master Cao Jiu had originally been a prison warden in the Qi County, and Chief Recorder Sima Xin had originally been a prison warden in Liyang. The two had been kind to Xiang Liang, so King Xiang trusted them.