《魏书·列传·卷八十一》
后来，侯刚由于拷打一名羽林军致死而获罪，被御史中尉元匡所弹劾，廷尉对侯刚处以死刑。
后刚坐掠杀试射羽林，为御史中尉元匡所弹，廷尉处刚大辟。
Later, Hou Gang was convicted for torturing a Yulin Guard to death and was impeached by Yushi Zhongwei Yuan Kuang, and Tingwei sentenced Hou Gang to death.