Due South, Season 1

Benton Fraser:
You know, Ray, when I was a young man, my father told me one thing to always remember about thieves. Well, actually, he told me two things, but I've forgotten the other one. Anyway, the important one is, that despite the adage, you will rarely find honor among thieves.

Ray Vecchio:
You can't remember the other one?

Fraser:
It was something about tying a wallet to your underwear. I was very young at the time. Anyway, the point is, if they took the money during the robbery then Hamlin would have to trust them to give him his share.