《逸周书·卷四·大匡解》
十一年，武王在管城。管叔鲜和蔡叔度自愿作殷人的监国。东方诸侯也都受到武王的赏赐。武王还接见他们，让他们各自陈述政事。
惟是有三祀，王在管，管叔自作殷之监，东隅之侯咸受赐于王，王乃旅之，以上东隅。
In the eleventh year, King Wu was at Guancheng. Guan-shu xian and Cai-shu du volunteered to serve as overseers of the Yin people. The Eastern princes also received rewards from King Wu. King Wu also met with them and allowed them to discuss their political affairs.