《北史·列传·卷五十九》
皇后又派人偷偷地去东宫察望，大小事情都要奏报，借以构陷诬害，谋成其罪。
皇后又遣人伺觇东宫，纤介事皆闻奏，因加媒蘖，构成其罪。
The queen sent someone to secretly go to the East Palace to observe him, and he had to report all the big and small things, which was used to frame and frame him and find a way to sue him.