《明史·列传·卷一百一十五》
王子不立即分封，担心妨碍婚娶。嫡长子不立即立，不害怕妨碍礼教吗？ 
王子不即封，虑妨婚娶，元子不即立，不虑妨豫教乎？ 
The crown prince was not immediately enfeoffed, for fear of hindering marriage. Isn't it feared that the legitimate eldest son will not be established immediately, hindering the ritual system?