《汉书·传·王莽传上》
这表明代皇帝与尊贵的汉室宗亲成为一体，要恭敬地主持宗庙的祭礼，供奉赡养太皇太后，不能够为他的生母穿丧服了。
明摄皇帝与尊者为体，承宗庙之祭，奉共养太皇太后，不得服其私亲也。
This showed that the regent, as one entity with the noble Han clan, must respectfully preside over the ancestral temple's sacrificial ceremonies, and pay homage to the grand empress dowager, and could not wear mourning clothes for his birth mother.