You're wrong, it isn't Saint's Doom, but it's your doom.
7 seconds sound clip from the Spiritual Kung Fu (1978) movie soundboard.
You can hear this line at 00:15:41 in the DVD version of the movie.
Quote context
[...]
- This is really a great stew! The best I've ever had.
- No, no. This has a special name.
- It's called Saint's Doom, 'cause even the Saints would be tempted by this.
- You're wrong, it isn't Saint's Doom, but it's your doom.
- Always so lazy... Get on with it!
- Listen, can I use a small brush?
- No, no. That's your punishment So go on, get on with it!
- I know. But this brush weights a ton.
[...]