I think that'll be the greatest punishment of all.

4 seconds sound clip from the The Asphalt Jungle (1950) movie soundboard.

You can hear this line at 00:07:31 in the Blu-ray version of the movie.

Quote context

[...]

- The two men on that detail ought to get medals for dumbness.

- They were assigned by you. You oughta get one too.

- I can do three things about you.

- I can reduce you to the rank of patrolman and send you down to Five Corners,

- I can bring you up for departmental trial on charges of incompetence, or I can give you one more chance to make good on your responsibilities.

- I think that'll be the greatest punishment of all.

- Thank you, sir. (2)

- There's the number you're looking for.

- But it's dark. You want me to wait?

- I wouldn't go parading around this neighborhood with a suitcase. Some of these young punks might clip ya just to get a clean shirt.

[...]