- Have a heart, Sefton.
- Sorry, it's against the rules of the racing commission.

3 seconds sound clip from the Stalag 17 movie soundboard.

You can hear this line at 00:37:23.819 in the Blu-ray version of the movie.

Quote context

[...]

- Come on, come on.

- Ten on Schnickelfritz.

- Equipoise.

- Schnickelfritz.

- Equipoise.

- Come on, boys, the horses are at the post.

- Equipoise?

- Equipoise.

- Ten on Equipoise.

- Five on Seabiscuit, and I'll pay when the Red Cross parcels come in.

- No credit.

- Have a heart, Sefton.

- Sorry, it's against the rules of the racing commission.

- Any more bets? Ready, Cookie?

- Ready!

- Let them go! And they're off and running at Stalag 17.

- Come on, Equipoise. Come on, you beauty!

- Equipoise! What did I tell you?

- Don't be no rat! Daddy'll buy you a piece of cheese!

- No, let's go!

- This way! This way!

- Straighten out, you dog!

[...]