《三国志·魏书·武文世王公传》
当初，曹彪入京朝见，触犯了禁令，青龙元年，被有关官员上奏举报，明帝下诏削减了他三个县、一千五百户的封地。
初，彪来朝，犯禁，青龙元年，为有司所奏，诏削县三，户千五百。
Initially, when Cao Biao came to the capital to pay homage, he violated the prohibition. In the first year of the Qinglong era, relevant officials impeached him, and Emperor Ming issued an edict reducing his fiefdom by three counties and 1,500 households.