It was I who allowed the Alliance to know the location of the shield generator. It is quite safe from your pitiful little band.
10 seconds sound clip from the Star Wars: Episode VI - Return of the Jedi movie soundboard.
You can hear this line at 01:32:51.508 in the Blu-ray version of the movie.
Quote context
[...]
- Yes. I assure you, we are quite safe from your friends here.
- Your overconfidence is your weakness.
- Your faith in your friends is yours.
- It is pointless to resist, my son.
- Everything that has transpired has done so according to my design.
- Your friends up there on the sanctuary moon are walking into a trap, as is your rebel fleet.
- An entire legion of my best troops awaits them.
- Oh, I'm afraid the deflector shield will be quite operational when your friends arrive.
- All right, up! Move! Come on. Quickly. Quickly.
- Han, hurry! The fleet will be here any moment.
[...]