I don't ever recall a scene where Moe hits Larry in "Monkey Businessmen" which was strange because that was during the era when Curly was ill.
No, I don't believe so. Oddly, even though he is obviously ill, Curly gets almost all of the physical abuse in that one. I just scanned through the short (watched it at 2x speed) and didn't see
any spots where Moe hits Larry, although I suppose I could have missed one.