《北史·本记·卷三》
二十七日，任命咸阳王禧为兼太尉，恢复前南安王桢本来的爵位。
辛酉，以咸阳王禧为长兼太尉，复前南安王桢本爵。
On the twenty-seventh day, the emperor appointed Prince Xi, the King of Xianyang, as acting Tawei (Grand Tutor), and restored the former King of Nanan, Zhen, to his original rank.