《宋史·列传·卷一》
后来，入内都知周怀政谋划废掉皇后杀掉丁谓，重新起用寇准来辅佐太子。
既而，入内都知周怀政谋废后杀谓，复用准以辅太子。
Later, Zhou Huaizheng, an official in the imperial palace, plotted to dethrone the empress, kill Ding Wei, and reinstate Kou Zhun to assist the Crown prince.