Glory be, I've got it. It's to pay his income taxes.
6 seconds sound clip from Batman (1966) - Zelda the Great (S1E9) TV Series.
You can hear this line at 00:06:33 in the Blu-ray version of the movie.
Quote context
[...]
- Meantime, let's ponder the crook's motive.
- A hundred thousand smackers. That's the motive.
- But why? Why exactly one hundred thousand dollars? Leaving another half million untouched.
- Batman's right. That has some meaning.
- The same strange pattern every year. Precisely a hundred thousand each April 1st.
- Glory be, I've got it. It's to pay his income taxes.
- A loyal taxpayer stooping to criminal methods?
- Uh, sure, when you put it that way...
- It's this case that's driving me mad. We're up against a blank wall.
[...]