《北史·列传·卷六十七》
当时，李质在宫禁中，令骁勇果敢之士守卫宫廷，宫中和外界交往通讯，谋划更为急切。
时李质在禁，令骁果守之，中外交通，所谋益急。
At that time Li Zhi was in the palace, and he ordered the brave and resolute men to guard the palace and to communicate and plan with the outside world more urgently.