The star is currently shooting Vishal Bharadwaj's drama Matru Ki Bijlee Ka Mandola.
He told IANS: "Actors have to worry about their work and not money. Producers are the guys who have to worry about the money.
"There are films which have done massive business and nobody has liked them. To me, it is important that people should remember my films 20 to 30 years down the line.
"I should be proud of doing a film. Money will come and go, what matters is what do people say when they talk about you.
"It really doesn't matter when the film releases. What matters is, 'Have people liked the film?' The best I can say is that I am proud of this film and I am part of this film, beyond that nothing is in my hands."
Khan will be seen playing a country boy for the first time in the adaptation of Chetan Bhagat's 2 States.
He has previously said that he almost dropped out because the preparation for the role was too hard.
The actor hired a language coach for the film, in which he will speak the Indian Haryanvi dialect.