《宋史·本纪·卷三十六》
十八日，宜州蛮攻打边境，改知郁林州沙世坚为宜州知州率兵攻讨。
庚寅，宜州蛮寇边，改知郁林州沙世坚知宜州讨之。
On the 18th day, the Yi barbarians attacked the border. Sha Shijian, the appointed prefect of Yulin prefecture, was changed to prefect of Yi prefecture and sent to quell the rebellion.