《汉书·传·魏相丙吉传》
临到受封时，西宣病了，皇帝怕西立死去无法加封，想赶到西吉活着的时候，派人拿着侯印去封侯。皇帝担心丙吉的病好不了，太子太傅夏侯胜对皇帝说： 他是不会死的。
临当封，吉疾病，上将使人加绅而封之，及其生存也。上忧吉疾不起，太子太傅夏侯胜曰： 此未死也。
Just before the investiture, Xi Xuan fell ill. The emperor feared Xi Xuan would die before he could be given the title, and was eager to confer it while he still lived. He sent someone with the marquess's seal of office to confer upon him. The emperor was still worried that Bing Ji's illness would kill him. The Crown Prince's Grand Tutor, Xiahou Sheng, said to the emperor, "He will not die."