It is Rabbit's house, Pooh.
4 seconds sound clip from The New Adventures of Winnie the Pooh - Tigger's Shoes / Lights Out (S1E20).
You can hear this line at 00:20:24.880 in the Blu-ray version of the TV Series.
Quote context
[...]
- Ah. So there you all are. Heh. Should have known you'd be lollygagging around.
- Oh, we was just resting. Ha ha ha. Being a zillion miles underground is kind of tiring, you know.
- You know, Piglet, a zillion miles underground certainly looks a lot like Rabbit's house.
- I don't know what happened, Gopher.
- That's no pillow. That's Gopher's helmet.
- Helmet? Here, Gopher. Let me return this to you.
[...]