昔《书》称“蛮夷帅服”,《诗》云“徐方既俫”,《春秋》列潞子之爵,许其慕诸夏也。汉兴至於孝文时,乃有弓高、襄城之封,虽自外来,本功臣后。故至孝景始欲侯降者,丞相周亚夫守约而争。帝黜其议,初开封赏之科,又有吴、楚之事。武兴胡、越之伐,将帅受爵,应本约矣。后世承平,颇有劳臣,辑而序之,续元功次云。〔表略〕