《史记·三十世家·晋世家》
献公说： 你拿什么做凭证？ 
献公曰： 何以为验？ 
Duke Xian said: What proof do you have that you can do this? 
<s>[INST] Translate the following passage from Classical Chinese to both modern Chinese and English, focusing on preserving the emotional tone in both translations: 献公曰： 何以为验？  [/INST] Modern Chinese: 献公说： 你拿什么做凭证？  English: Duke Xian said: What proof do you have that you can do this? </s>
Translate the following passage from Classical Chinese to both modern Chinese and English, focusing on preserving the emotional tone in both translations: 献公曰： 何以为验？
user
Modern Chinese: 献公说： 你拿什么做凭证？  English: Duke Xian said: What proof do you have that you can do this?
assistant