You will reach the top alive.
4 seconds sound clip from the The Princess Bride (1987) movie soundboard.
You can hear this line at 00:18:55 in the Blu-ray version of the movie.
Quote context
[...]
- I could give you my word as a Spaniard.
- No good. I've known too many Spaniards.
- Is there any way you'll trust me?
- I swear on the soul of my father, Domingo Montoya.
- You will reach the top alive.
- We'll wait until you're ready.
- I do not mean to pry, but you don't, by any chance, happen to have six fingers on your right hand?
[...]