Foreign assets have to be declared in Indian Tax returns. Worldwide income of an Indian resident may be taxable in India. There are RBI regulations for moving funds out of India. A several other rules and regulations that emanate out out Indian Laws.
You don't appear to be very knowledgeable about Indian Tax laws.
He doesn't need to prove anything to you. And neither do I. Last I heard you are innocent until proven guilty. You do the work and prove he didn't declare it.
The fact that he owns an apartment in the UK is in the public domain.
The fact that he owns property in the UK using an offshore company is public knowledge. I think it has even been declared in his returns. This isn't much of a newsflash. Try again.
You don't appear to be very knowledgeable about Indian Tax laws.
Last I heard you are innocent until proven guilty.
You do the work and prove he didn't declare it.
The fact that he owns an apartment in the UK is in the public domain.
(...). Good luck!