Where does it say in any rule that one good deed deserves another?
Okay so let’s just say it does. Then, what is a good deed?
If I see someone in need and I reach out to them with food, money, shelter. What are they to do for me in return? Quite frankly I say the only good deed they can do for me in return is to pay it forward.
I think all good deeds should be like this. Good deeds should never be repaid in sexual favors, crimes, violence to others. It would be bad karma. So just remember pay it forward.