Yeah, don't expect to find nuggets of molten gold. It's rich, but not that rich. And here ain't the place to dig. It comes from someplace further up.

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

You can hear this line at 00:31:48.642 in the Blu-ray version of the movie.

Quote context

[...]

- Without me, you two would die here more miserable than rats!

- Oh, leave him alone! Can't you see that the old man's nuts?

- Nuts? Nuts, am I? Ha!

- Let me tell you something, my 2 fine bedfellows! You're so dumb, there's nothing to compare you with! You're dumber than the dumbest jackass! Look at each other, will you? You ever see anything like yourself for being dumb specimens? Ha ha ha ha...!

- You're so dumb, you don't even see the riches you're treading on with your own feet!

(Howard laughing)

- Yeah, don't expect to find nuggets of molten gold. It's rich, but not that rich. And here ain't the place to dig. It comes from someplace further up.

- Up there. Up there's where we got to go. Up there!

- Is that it?

- That's it, all right.

- The gold, I mean.

- It sure don't look like I thought it would.

- It's not much different than sand.

- Yeah, it's just like plain sand.

- It don't glitter. I thought it would glitter.

- Oh, it'll glitter when it's refined. That's some other guy's job. All we got to do is mine it and get it back there.

- You know, gold ain't like stones in a river bed. It don't cry out to be picked up. You got to know how to recognize it. And finding it ain't all... not by a long shot. You got to know how to tickle it so she'll come out laughing.

[...]