Have you heard about Signor Ugarte and the letters of transit?
5 seconds sound clip from the Casablanca (1942) movie soundboard.
You can hear this line at 01:00:29 in the Blu-ray version of the movie.
Quote context
[...]
- For the present we will go on looking for two exit visas. Thank you very much.
- Well, good luck, but be careful. You know that you're being shadowed?
- Of course. It becomes an instinct.
- I observe that you, in one respect, are a very fortunate man.
- I am moved to make one more suggestion. Why, I do not know. Because it cannot possibly profit me.
- Have you heard about Signor Ugarte and the letters of transit?
- Those letters were not found on Ugarte when they arrested him.
[...]