《宋史·列传·卷九十六》
苏轼获罪，投入御史台狱，官府急于向他索要与范镇的来往书信文章，范镇还是上书辩论救助苏轼。
轼得罪，下台狱，索与镇往来书文甚急，犹上书论救。
When Su Shi was found guilty and imprisoned by the Office of History, officials demanded all his letters and essays exchanged with Fan Zhen, however Fan Zhen still appealed to the court to defend Su Shi.