The only engine we've got with enough power for a direct abort is the SPS on the service module.
6 seconds sound clip from the Apollo 13 movie soundboard.
You can hear this line at 01:08:30 in the Blu-ray version of the movie.
Quote context
[...]
- We don't even know if the Odyssey's engine's working.
- If there's been serious damage to the spacecraft...
- That is not the argument! We're talking about time! Not whether or not these guys...
- I'm not gonna sugarcoat this for you!
- Okay, hold it. Let's hold it down. Let's hold it down, people.
- The only engine we've got with enough power for a direct abort is the SPS on the service module.
- It could have been damaged in an explosion, so, let's consider that engine dead.
- I'm wondering what the Grumman guys think about this.
[...]