- I was wrong. I ought not to be hitting you at all. I ought to be thanking you for helping us.
- Yeah, well...

10 seconds sound clip from the El Dorado (1966) movie soundboard.

You can hear this line at 01:28:31 in the Blu-ray version of the movie.

Quote context

[...]

- That wasn't a fool question.

- Well, then, I'll ask you one.

- Why do you wear your hair like some wild mustang that needs a currycomb and a brush? I don't think that...

- Now, don't do that again, 'cause I can hit a little harder than you.

- Damn you.

- Look, if you are who you say you are, I'm on your side.

- I was wrong. I ought not to be hitting you at all. I ought to be thanking you for helping us.

- Yeah, well...

- Could I have my rifle back?

- No, not just yet. Not till we find out who you really are.

- I told you who I am.

- Yeah, well, you just say so. Come on. We'll go find out, huh?

- Bull, what did Mississippi say?

- He was going to the stable over across the street.

- Well, I guess I better go find out.

[...]