《墨子·31章 明鬼(下)》
《禹誓》说： 在甘这个地方举行大战，夏王于是命令左右六人，下到中军去听宣誓。
《禹誓》曰： 大战于甘，王乃命左右六人，下听誓于中军。
The Oath of Yu says: In this place Gan, a great battle was held, so Xia Wang commanded the six men on his left and right, to go down to the central army to hear the oath.