《南史·列传·卷四十九》
本来怀疑他会迅速推进，攻其不备；现在朝廷六师一齐奋起，诸侯共同举兵，他已经成为笼中之鸟了。 
本疑其轻速，掩袭未备；今六师齐奋，诸侯同举，此已笼之鸟耳。 
I originally suspected that he would advance quickly and attack when we are unprepared. Now, the six armies of the court are all rising up, and the princes are also sending troops. He has already become a bird in a cage.