《左传·僖公·僖公七年》
秋季，鲁僖公和齐桓公、宋桓公、陈国的世子款、郑国的世子华在宁母结盟，策划进攻郑国。
秋，盟于甯母，谋郑故也。
In the autumn, Duke Xi of Lu, Duke Huan of Qi, Duke Huan of Song, Shizi Kuan of the State of Chen, and Shizi Hua of the State of Zheng formed an alliance in Ningmu and planned an attack on the State of Zheng.