Morris went to his rabbi for some needed advice. “Rabbi, tell me is it proper for one man to profit from another man’s mistakes?”
“No Morris, a man should not profit from another man’s mistakes” answered the rabbi.
“Are you sure Rabbi?”
“Of course, I’m sure, in fact I’m positive” exclaimed the Rabbi.
“Ok, Rabbi, if you are so sure, how about returning the two hundred dollars I gave you for marrying me to my wife?”