The point is, it's already done.
4 seconds sound clip from the The Quiet Man (1952) movie soundboard.
You can hear this line at 00:24:42 in the Blu-ray version of the movie.
Quote context
[...]
- I don't blame Mr Danaher for gettin' on his ear.
- Why, you and ten like you couldn't put a Danaher on his ear.
- It's just a way of speaking...
- The point is, it's already done.
- I own the property now, and as long as we're gonna be neighbours...
- Neighbours? Neighbours... Never!
- And if I so much as catch you putting one foot on my property, I'll... I...
- And, oh, another thing. You keep away from my sister Mary Kate. She's not for the likes of you.
- Where I come from, we don't talk about our womenfolk in saloons. You sort of make a habit of it.
[...]