I've heard them say that the Emperor has promised an entire hill of gold to anyone who can help him live forever.

7 seconds sound clip from the Princess Mononoke movie soundboard.

You can hear this line at 00:16:58.748 in the Blu-ray version of the movie.

Quote context

[...]

- So you say you're under a curse? So what? So's the whole damn world.

- I was wrong to fight in that village. Two men are dead because of me.

- Samurai thugs. You win some, you lose some.

- Here, hand me your bowl.

- My point is, everybody dies, boy. Some now, some later. From brothel girl to Emperor.

- I've heard them say that the Emperor has promised an entire hill of gold to anyone who can help him live forever.

- Beautiful bowl. I've seen one other like it.

- Have you ever heard of the Emishi people? They're said to ride red elks. They also use stone arrowheads just like you.

- Of course, they were all wiped out 500 years ago.

- Don't worry. I won't tell anyone where you're from.

[...]