Once you do a favor like that for a man, he's in your hands forever. He's like a bank.
6 seconds sound clip from the The Enforcer (1951) movie soundboard.
You can hear this line at 01:12:31.323 in the Blu-ray version of the movie.
Quote context
[...]
- That's where we come in. We service these people with a killer who's got no motive.
- He won't even know the guy, so how can the cops find him?
- How can you trust him? He's got you.
- No. We got him. He is the one with the motive.
- Once you do a favor like that for a man, he's in your hands forever. He's like a bank.
- You're talking through that head you got your business in.
- Yeah? What do you think I'm doing here?
- This is my first contract. I'm getting 500 bucks to...
- You'll never have 500 bucks as long as you live.
[...]