《元史·本纪·卷二》
太宗皇帝曾经派诸侯王按只带讨伐金国，定宗以皇子的身份跟随出征，掳获了金国的亲王而回。
太宗尝命诸王按只带伐金，帝以皇子从，虏其亲王而归。
Emperor Taizong once sent Prince Anzhisun to attack the Jin Dynasty, and Emperor Dingzong accompanied the troops as a prince, and captured a Jin king.