《左传·襄公·襄公十一年》
于是就盟誓。盟书说： 凡是我们同盟国家，不要囤积粮食，不要垄断利益，不要庇护罪人，不要收留坏人。救济灾荒，安定祸患，统一好恶，辅助王室。
乃盟，载书曰： 凡我同盟：毋蕴年，毋壅利，毋保奸，毋留慝，救灾患，恤祸乱，同好恶，奖王室。
So they made an oath. The oath said: All of us allied countries, do not hoard food, do not monopolize profits, do not shelter criminals, do not accept bad people. Provide disaster relief, stabilize disasters, unify likes and dislikes, and assist the royal family.