《三国志·魏书·武文世王公传》
用恭敬侍奉兄长，以慈爱体恤弟弟；如果兄弟有不好的行为，应该下跪劝谏他们。
事兄以敬，恤弟以慈；兄弟有不良之行，当造膝谏之。
Serve the elder brother with respect, and care for the younger brother with love; if the brothers have misbehaviors, kneel down and advise them.