《汉书·传·王莽传下》
巨鹿郡男子马适求等人谋划发动燕地、趟地的军队来讨伐王莽，大司空的办事人员王丹发觉了，把它上报。
巨鹿男子马適求等谋举燕、赵兵以诛莽，大司空士王丹发觉以闻。
Ma Shiqiu and others from the Julu commandery planned to mobilize the troops of Yandi and Tangdi to attack Wang Mang. Wang Dan, an official of the Grand Minister of Works, discovered this and reported it.