《史记·三十世家·楚世家》
伍奢说： 伍尚为人正直憨厚，敢为节义而死，慈爱孝悌忠义，听说回楚可以免除父亲的死罪，必然回来，不顾惜自己的性命。
奢曰： 尚至，胥不至。 王曰： 何也？ 奢曰： 尚之为人，廉，死节，慈孝而仁，闻召而免父，必至，不顾其死。
Wu Shu said: “Wu Shang is honest and dull. He dares to die for loyalty and justice. He is loyal, filial, kind, and righteous. If he hears that by returning to the State of Chu he can exempt his father from death, he will definitely come back, regardless of his own life.”