《魏书·列传·卷十二》
又派遣许谦和佛嵩结盟说： 从前殷汤有鸣条的宣誓，周武王有河阳的盟约，都是依仗神灵，来昭示忠诚信实。
重遣谦与佛嵩盟曰： 昔殷汤有鸣条之誓，周武有河阳之盟，所以藉神灵，昭忠信。
Again sending Xu Qian and Fosong to form an alliance and said: From before Yin Tang’s Mingtiao covenant, to Zhou Wu Wang’s Heyang covenant, they all relied on gods, to display loyalty and honesty.