《资治通鉴·唐纪·唐纪十三》
从前陛下既立承乾为太子，又宠爱魏王，对他的礼遇超过承乾，以致造成了今日的灾祸。
陛下日者既立承乾为太子，复宠魏王，礼秩过于承乾，以成今日之祸。
In the past, your Majesty established Chengqian as the crown prince, but also favored King Wei. The courtesy he received surpassed Chengqian's, which led to today's disaster.