《资治通鉴·汉纪·汉纪十四》
此时，钩弋夫人所生的皇子刘弗陵，虽然只有几岁，却长得身体粗壮，聪明懂情，汉武帝对他极为疼爱，想立他为太子，只因其年纪幼小，母亲也太年轻，所以一直犹豫不决。
时钩弋夫人之子弗陵，年数岁，形体壮大，多知，上奇爱之，心欲立焉；以其年稚，母少，犹与久之。
At this point, the Imperial Consort Gouyi's crown prince, Liu Fuling, although only a few years of age, grew with a strong physic, was clever and intelligent, whom Emperor Wu of Han dearly loved, and wanted to make Crown Prince, but because of his young age, and his mother too, was young, thus he hesitated.