But he's afraid to go to sleep. He had a scary dream.

5 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 00:15:56.051 in the Blu-ray version of the TV Series.

Quote context

[...]

- I don't suppose a teeny tiny nap could be arranged? After all, whoever heard of a nightmare coming true in the daytime?

- But we can't sleep now, Pooh. We promised Rabbit we'd help clean up his house.

- And a promise is a promise after all.

- I must stay awake, so that dream won't take my friends away.

- If Piglet doesn't get some rest soon, he's going to wear me out.

- But he's afraid to go to sleep. He had a scary dream.

- We're going to have to get Piglet napping without him knowing it.

- I know. Counting sheep will do it every time.

- But we haven't got any sheep.

- Don't worry, Pooh Bear. Pullin' the wool over Piglet's eyes is what Tiggers do the best. Ooh-hoo-hoo-hoo-hoo!

- You know, Piglet, if you look hard enough, you might see more than just corn in this field.

[...]