You really shouldn't hit a man when he has his hands behind his back.
5 seconds sound clip from the Gilda (1946) movie soundboard.
You can hear this line at 00:12:36.712 in the Blu-ray version of the movie.
Quote context
[...]
- You simply had me gambling on the wrong side. I'll be better if you had me on your side.
- I don't like my people to cheat.
- I cheat with my own money, sure. But with your money, I wouldn't have to cheat. Think it over.
- You know, I think I will. How much time do you give me?
- Oh, there's no hurry. You can take a minute or two. Excuse me while you're making up your mind.
- Not you.
- You really shouldn't hit a man when he has his hands behind his back.
- You see? This way, you'll have two friends.
- You've no idea how faithful and obedient I can be... for a nice salary.
- This I must be sure of: that there is no woman anywhere.
- Gambling and women do not mix.
- Those are the very words I use myself. Now, shall we quit talking about it?
[...]