I'm afraid that Jason doesn't want Saul or your father around to testify as to how he got the deed to that water.
7 seconds sound clip from the El Dorado (1966) movie soundboard.
You can hear this line at 01:51:02 in the Blu-ray version of the movie.
Quote context
[...]
- Joey, you were supposed to tell your family to watch out.
- You know they're never gonna give Saul back, don't you, Sheriff?
- You've got to do something, Sheriff. You've just got to.
- There ain't nobody trailing that I can see.
- When is your father supposed to do all this?
- They're bringing Saul to Jason's saloon.
- Pa's supposed to bring the deed.
[...]