- But, uh, killing...
- What's the matter? Ain't you up to it?
- Sure, I'm up to it.

4 seconds sound clip from the The Treasure of the Sierra Madre movie soundboard.

You can hear this line at 01:02:47.798 in the Blu-ray version of the movie.

Quote context

[...]

- What do we gain by bumping him off?

- If he was asking to share in what we made, it'd be different.

- I don't mind being taken some advantage of, so long as it isn't money out of my pocket.

- And whoever else happens along... They're to be invited in, too? Come one, come all, eh?

- Yeah, you got a point there, Dobbsy, no question about that.

- But, uh, killing...

- What's the matter? Ain't you up to it?

- Sure, I'm up to it.

- Let the majority decide. What's your vote, partner?

- For or against?

- For.

- Ok. Let's make it short and sweet for him.

- So it's number one, is it?

- Better take a look down that hill first.

[...]