《国语·晋语·骊姬谮杀太子申生》
太子申生从稷桑回来后，过了五年，骊姬对献公说： 我听说申生谋害你的打算更成熟了。
反自稷桑，处五年，骊姬谓公曰： 吾闻申生之谋愈深。
After Prince Shen Sheng returned from Ji Sang, five years passed, and Li Ji said to Duke Xian: I have heard that Shen Sheng's plan to murder you is more advanced than ever.