I know "karma is a b**ch", "what goes around, comes around", and "you reap what you sow", but I'm looking for a much more elaborate phrase that's very descriptive, which I had heard ages ago but can't recall it anymore.
I'm looking for a much more elaborate phrase that's very descriptive.
I suspect you're looking for this:
As you sow so shall you reap.
From The Phrase Finder:
Your deeds, good or bad, will repay you in kind...
From the Bible, Galatians VI (King James Version):
Whatsoever a man soweth, that shall he also reap.