《北史·列传·卷三十八》
所以，高祖孝文帝赐给他匡这个名字，陛下您命他负责弹劾的重任。
故高祖锡之以匡名，陛下任之以弹纠。
That is why Emperor Xiaowen of the Northern Wei dynasty bestowed upon him the name Kuang, and Your Majesty has entrusted him with the important duty of impeachment.