"While we were doing script reading for the first time I was unable to deliver dialogues in Haryanvi. It was all not easy at all. I felt I made a mistake by agreeing to do this film. I felt I should back out," he told reporters here.
"I told director Vishal Bharadwaj that I won't be able to do this. It was he who convinced me to do it. He had faith in me when I did not have faith in myself," he said.
Imran had to work on his Haryanvi and his uncle Aamir Khan had advised him.
"I remember Aamir telling me that I should go to Haryana for six months, so that I get things in a more right and appropriate way. It was not feasible. Also, during 'Jaane Tu Yaa Jaane Naa' he had told me to travel across India in a bus for a year. It was Abbas Tyrewala who told this was not possible and that we should start shooting soon," Imran said.
"The role I am playing in this film is different from what I have done earlier. We prepared for almost two-and-half-months. I feel the more we rehearse and prepare for the film, the better we perform," he said.
Imran praised Vishal Bharadwaj for being a calm and composed person and guiding him for his performance.
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"I wanted to see the character of Matru in Imran. We did several tests on his appearance and finally got him in this overgrown beard," Bharadwaj said.
The movie which is scheduled to release on January 11, 2013, stars Anushka Sharma opposite Imran, besides Pankaj Kapoor and Shabana Azmi among others.