《三国志·魏书·诸夏侯曹传》
当初，夏侯渊虽然屡战屡胜，但太祖还是经常劝诫他说： 作为将领，应该有怯弱的时候，不能只仗着勇猛横冲直撞。
初，渊虽数战胜，太祖常戒曰： 为将当有怯弱时，不可但恃勇也。
Early on, although Xiahou Yuan often emerged victorious from battles, the Grand Ancestor often exhorted him: "As a general, one should be able to be timid at times, not just rely on bravery to blindly charge forward.