And the sleigh started down toward the homes where the Whos lay a-snooze in their town.

9 seconds sound clip from the How the Grinch Stole Christmas! (1966) movie soundboard.

You can hear this line at 00:10:30 in the Blu-ray version of the movie.

Quote context

[...]

- The Grinch looked around, but since reindeer are scarce, there was none to be found.

- Did that stop the Grinch? Ha. The Grinch simply said: If I can't find a reindeer, I'll make one instead.

- So he took his dog, Max, and he took some black thread, and he tied a big horn on the top of his head.

- Then he loaded some bags and some old empty sacks on a ramshackle sleigh, and he whistled for Max.

- Then the Grinch said...

- Giddap.

- And the sleigh started down toward the homes where the Whos lay a-snooze in their town.

- All their windows were dark. No one knew he was there.

- All the Whos were all dreaming sweet dreams without care when he came to the first little house on the square.

- This is stop number one.

- The old Grinchy Claus hissed as he climbed to the roof, empty bags in his fist.

[...]