《国语·周语·单襄公论郤至佻天之功》
我三次追逐楚军，这是勇；遇上楚君必定下车快步上前，这是礼；俘获了郑伯又放了他，这是仁。
吾三逐楚军之卒，勇也；见其君必下而趋，礼也；能获郑伯而赦之，仁也。
I pursued the Chu army three times, which was brave; when I met the King of Chu, I would always get out of my chariot and approach him quickly, which was courteous; I captured the Duke of Zheng but then released him, which was benevolent.