《宋史·列传·卷四十一》
王旦说： 希望宣召寇准，我有所陈述。 寇准到，王旦奏请说： 十天之间没有捷报时，应怎么办？ 真宗沉默了很久后说 ：立皇太子。 王旦既到达京城，径直进入禁中，下命令很严格，使人不得传播消息。
旦曰： 愿宣寇准，臣有所陈。 准至，旦奏曰： 十日之间未有捷报，时当如何？ 帝默然良久，曰： 立皇太子。 旦既至京，直入禁中，下令甚严，使人不得传播。
Wang Dan said, "I hope you will summon Kou Zhun. I have something to say." Kou Zhun arrived, and Wang Dan played a memorial saying, "What should be done if there is no good news within ten days?" Emperor Zhenzong remained silent for a long time before saying, "Establish the crown prince." When Wang Dan reached the capital city, he went straight to the palace and issued strict orders that no one should spread the news.