"Just a minute and a half of the song was left. He (Chopra) wanted to do it in Switzerland. We don't have the heart to shoot that part now. We will make it impure if we had to shoot it," Shah Rukh said at a promotional event of the film here Monday.
Other than this, the film seems to be ready for release.
"The movie is ready for release. He (Chopra) had finished editing and the background mix was happening. The film was locked by Yash ji. The film which you will see has been entirely made by Yash Chopra," he added.
The love story stars Anushka Sharma and Katrina Kaif along with Shah Rukh and is all set to release on the Nov 13, along with Ajay Devgn's home production "Son of Sardaar".
Shah Rukh thinks that it is unfair to ask anyone to change their release date and therefore is fine with the simultaneous release of both the films.
"It is unfair to ask anybody to change the release date of their film. Everybody loves their films. Yash ji would have felt the same way. Films will always overlap and it is not fair for us to ask them to change it," he said.
Talking about box office numbers, Shah Rukh said that he is not looking at collections and just wants the audience to enjoy his film.
"I am not a businessman. I just feel that my films should be enjoyed by all. I have earned enough money and awards in my life, so numbers don't matter. But you are anxious when your film is all set to release," he said.
Chopra died of multi-organ failure last Sunday (Oct 21).