《史记·三十世家·吴太伯世家》
专诸说： 杀死王僚的条件已经具备，国内只有他的老母幼子，而他两个弟弟率兵攻楚，被阻绝了归路。
专诸曰： 王僚可杀也。母老子弱，而两公子将兵攻楚，楚绝其路。
Zhuanzhu said: The conditions to kill Wang Liao are ready, there are only his old mother and young son in the country, while his two younger brothers led the army to attack Chu and were cut off from their way back home.