Actually, technically speaking, he's... not really a murderer. He never killed anyone. He finds ways for his victims to kill themselves.
15 seconds sound clip from the Saw (2004) movie soundboard.
You can hear this line at 00:18:35 in the Blu-ray version of the movie.
Quote context
[...]
- I think we're gonna be here for a while, Sing.
- The newspapers started calling him the jigsaw killer.
- Hello, Mark. If you're so sick, then why do I have so many photos of you up and about?
- Let's put your so-called illness to the test.
- Right now, there's a slow-acting poison in your veins. The antidote is inside the safe.
- Help!
- The combination to the safe... is written on the wall. Hurry up and program it in.
[...]