《资治通鉴·汉纪·汉纪二十六》
九月，任命光禄勋平当为御史大夫。冬季，十月，甲寅，擢升平当为丞相。由于正赶上不宜封侯的冬月，因此暂时赐爵前关内侯。
九月，以光禄勋平当为御史大夫；冬，十月，甲寅，迁为丞相；以冬月故，且赐爵关内侯。
In the 9th month, Ping Dang was appointed Imperial Censor. In winter, the 10th month, on jia-yin day, Ping Dang was promoted to Chancellor. Since this happened in the winter month, when new marquises were not supposed to be enfeoffed, he was provisionally granted the title of Former Marquis (of Guannei).