Abu Bakr-e Kattani Ra  related as follows.

I saw in a dream an extremely handsome youth.
“Who are you?” I enquired.
“Piety,” he replied.
“Where do you dwell?” I asked.
“In the heart,” he answered, “of the sorrowful.”
Then I saw a most hideous, ugly woman.
“Who are you?” I demanded.
“Laughter and gaiety and enjoyment,” she
answered.
“Where do you dwell?”
“In the hearts of the heedless and those who amuse
themselves.”

When I awoke, I resolved that I would never laugh
again, except when I could not help myself.