These people, the Fremen, have long held a prophecy that a super being, a male child of a Bene Gesserit with great mental powers and courage, the Kwisatz Haderach, will come and lead them to true freedom.
17 seconds sound clip from the Dune (1984) movie soundboard.
You can hear this line at 00:55:10 in the Blu-ray version of the movie.
Quote context
[...]
- Far off in the control rooms of the spice gas.
- Hidden away within the rocks of these deserts on Arrakis are a people known as the Fremen.
- House Atreides took control of Arrakis, 63 standard days into the year 10191.
- Atreides' patrols were doubled.
[...]