"They pull a knife, you pull a gun. He sends one of yours to hospital, you send one of his to the morgue." are lines in which film?

In Brian DePalma's 1987 crime drama "The Untouchables," Jim Malone uses the phrase: "You wanna know how to get Capone? They pull a knife, you pull a gun. He sends one of yours to the hospital, you send one of his to the morgue. That's the Chicago way! And that's how you get Capone. Now do you want to do that? Are you ready to do that? I'm offering you a deal. Do you want this deal?" These words are said directly to Eliot Ness, the leader of a famous team of U.S. law enforcement agents nicknamed 'The Untouchables'.

The phrase by Malone is in keeping with the primary plot of the movie. Here, the film is about how Eliot Ness and a small band of governmental federal agents will act to completely take down Al Capone and his criminal organization.