"They needed an eight-year-old boy for a very crucial role in the film. I have twin sons Ishaan and Sham and Ishaan has played a small role in the film. Abhishek has honoured an author and a father by this," Bhagat told IANS.
"Abhishek made Ishaan perform for at least 35 times as he is quite a perfectionist. This is a very special film for me as a father," he added.
However, his kids education still remains top priority for the author.
"Both me and my wife are educated. Our priority will always be their education then later they can make their own choice," Bhagat said.