A great thought
One day the Mulla asked his wife to cook halwa, a rich sweetmeat, and gave her all the ingredients. She made a large quantity and the Mulla ate nearly all of it. That night, when they were in bed, he woke her up.
"I have just had a remarkable thought."
"What is it ?"
"Bring me the rest of the halwa and I will tell you."
She got up and brought him the halwa, which he ate. "Now," she said, "I shall not be able to sleep until you have told me the thought."
"The thought," said Nasrudin, "was this: 'Never go to sleep without finishing all the Halwa which has been made during the day.'"