《北史·列传·卷三十九》
早先，术士说灭亡高姓的一定是穿黑衣服的人，从此自神武帝以后，天子每次出行都不想见到寺院的门，就是因为黑色的缘故。
初，术士言亡高者黑衣，由是自神武后每出行不欲见桑门，为黑衣故也。
Earlier, the sorcerer said that the one to perish the Gao surname must be the one who dressed in black. Since then, after Emperor Shenwu, Emperor Shenwu never wanted to see the monastery gate whenever he went out, because of the black color.