Nadiadwala has co-produced the Arjun Kapoor and Alia Bhatt starrer.
It was apparently Nadiadwala who first bought the rights to make a film on Chetan Bhagat's bestseller "2 States: The Story Of My Marriage` and Karan had approached Nadiadwala to be his partner in the film.
So, Karan had called Nadiadwala to congratulate him on their partnership as well as to mention that the success party of `2 States` will not happen till he is back from Poland.
`Karan did call me and told me that the party won't take place till I am back,` Nadiadwala said in a statement.
The Abhishek Varman's debut directorial that released April 18 shows the coming together of two families from north and south India.