《新五代史·列传·杂传第三十》
唐兵进攻封丘门，王瓒开门投降，伏在地上请求处死，唐庄宗慰劳他，扶起他说： 我和你家世代联姻，而臣子各自为自己主人罢了，又谈什么罪呢！ 
唐兵攻封丘门，瓚开门迎降，伏地请死，庄宗劳而起之曰： 朕与卿家世婚姻，然人臣各为主耳，复何罪邪！ 
The Tang soldiers attacked Fengqiumen, and Wang Zan opened the door and surrendered. He knelt on the ground and asked to be executed. Tang Zhuangzong comforted him and helped him up and said: My family has been married to your family for generations, and the ministers are just working for our own masters. What's the point of talking about sin! 