Well, that horse could take a man across the border and into safety.
6 seconds sound clip from the Dark Command (1940) movie soundboard.
You can hear this line at 00:40:41 in the Blu-ray version of the movie.
Quote context
[...]
- Murdered by your fine young snob of a son!
- Look, Bob, we're not in Maryland or Virginia where the laws are so rigid. This is the frontier.
- I'm sorry, but I just can't do it.
- You bought a horse today from Martin Claussen. The fastest horse he owns.
- Well, that horse could take a man across the border and into safety.
- He's old enough to carry a gun and use it.
- He'll have to stay in my custody.
- You'll sit there and calmly sentence my boy to death. You cannot do it.
[...]