《资治通鉴·周纪·周纪五》
现在异人贤明，又知道自己排行居中，做不了嫡子，夫人如果这时候提拔他，异人就从无国变成了有国，夫人也从无子变成了有子，便会终身在秦国得到宠幸。 
今子异人贤，而自知中子不得为适，夫人诚以此时拔之，是子异人无国而有国，夫人无子而有子也，则终身有宠于秦矣。 
Now Yiren is wise, and also knows that he is ranked in the middle, and cannot become the legitimate heir, so if my lady were to promote him at this time, Yiren would be transformed from having no kingdom to having a kingdom, and my lady would be transformed from having no son to having a son, and would forever be favored in Qin. 