I'm afraid to go to sleep, 'cause when I wake up, my dream will have come true, and I'll be left all alone.

6 seconds sound clip from The New Adventures of Winnie the Pooh - Sham Pooh / Rock-a-Bye Pooh Bear (S3E2).

You can hear this line at 00:14:35.516 in the Blu-ray version of the TV Series.

Quote context

[...]

- Picnic?

- Well, I don't think a picnic is a good idea. When my ears twitch like this, it's a sure sign of rain.

- Ears? Rain? Oh, dear!

- It certainly is a very small bed, for such a very frightening dream.

- Hello, Piglet. You ran away so quickly, I forgot to say goodnight. Goodnight, and pleasant dreams.

- Dreams? Yipes!

- No, Pooh, don't leave. It's not going to be a good night.

- I'm afraid to go to sleep, 'cause when I wake up, my dream will have come true, and I'll be left all alone.

- Well, perhaps that won't happen if I stay awake with you tonight.

- Oh, Pooh, would you?

- I'm sure the dream will find it much too crowded here and go away.

- Perhaps we should discuss something cheerful to keep ourselves up. Like honey. Hives. Bees.

- Oh, dear.

[...]