So we all know that a SUFI holy man is called a Deverish. This is one of their "moral" lessons that has been handed down over the centuries.
One morning in the "long ago" a certain Deverish awoke with an enlightment. He realized that one does not have to help a "sinner" through constant bitching or nagging. One can be more subtle and still have an effect.
In order to experiment with this concept, he thinks about which of the village sinners most needs his help, and decides finally, upon the "gambler". Each morning the gambler goes off to risk everything he owns or loves on the toss of a dice. This is - in the Sufi belief system- a sin of self-indulgence. So, rather than nagging or preaching at the Gambler, our Deverish simply goes to his home every mornig and places a stone by the gambler's doorway. This, figures our holy man, will cause the guy to remember that each day he is committing new sin.
For twenty years, this ritual continues. Every day the Gambler goes to play. Every morning the Deverish places a stone. Each day, the Deverish feels more frustration that the gambler isn't paying attention. Each day, the Gambler thinks, "What a nice guy to care so much about my soul, and yet not bitch at me. What a good soul he has. May he be blessed daily."
Finally , as they both have aged, they die. Coincidentally on the same day. God sends the same angel to pick the two of them up for final judgement, and to drop one off at the gates of Hell, the other at the gates of Heaven. Our Gambling friend looks around a bit puzzled and says to the Angel "I think you have made a mistake, Esteemed Friend, I am the Gambler and thus am a sinner. I don't belong here in Heaven."
"AHH", says the Angel. "Allow me to explain- Firstly this is Heaven (the Perfect Place), we are not in the business of making mistakes. You belong here with us and here is why I say that. Every morning for the last twenty years, you have looked at the pile of rocks carefully placed by the Deverish. You haven't complained, nor argued with him. Instead you have appreciated his concern and blessed him. This is a good thing. On the other hand, he has spent every morning finding a reason to judge another and show them his disapproval and that is judgementalism which is indeed a sin worthy of hell. You are in the right place,My Friend".