《金史·列传·卷三十六》
《礼经》记载有嫡立嫡、无嫡立庶，如今我的宫人怀孕的有两位，已告之新帝，如其中有男孩当立为太子，如都是男子，选择可立的立之。 
载惟礼经有嫡立嫡、无嫡立庶，今朕之内人见有娠者两位，已诏皇帝，如其中有男当立为储贰，如皆是男子，择可立者立之。 
According to the Book of Rites, a legitimate son should be established if there is one; if there is none, a concubine's son should be established. Today, two of my palace ladies are pregnant. I have already informed the new emperor. If one of them gives birth to a boy, he should be established as the Crown Prince. If they both give birth to boys, we can choose the one who is more suitable to establish.