What goes up is sure to come down.
3 seconds sound clip from the Song of the South (1946) movie soundboard.
You can hear this line at 00:45:16.366 in the Blu-ray version of the movie.
Quote context
[...]
- If it's whistling a tune or singing a song, they all say howdy when you come along.
- Good morning, good morning, girls.
- Oh, good morning, Miss Nellie.
- What goes up is sure to come down.
- A penny lost is a penny found.
- I'll howdy you and you howdy back. This for that and tit for tat.
- Pretty good, sure as you're born!
[...]