《周书·本纪·卷四》
北周武成元年春季正月己酉曰，太师、晋公宇文护上表交还朝政，明帝开始亲自处理国家事务。
武成元年春正月己酉，太师、晋公护上表归政，帝始亲览万机。
On the day of Jiyou in the first month of spring in the first year of Emperor Wu of Northern Zhou, Taishi, Jin Gongyu Wenhu handed over the imperial court in the memorial, and Emperor Ming started to handle state affairs in person.