This bowl can never be filled

Eid Mubarak.
I love this Sufi story. Am sure you will too.
A beggar came to an emperor and said, “I will accept your charity only on one condition.” The emperor was shocked. Here’s a beggar who imposes a condition to accept alms.
“What?” he asked.
“I accept only if you can fill my begging bowl absolutely.”
The king looked at the small bowl. “You think I cannot fill this dirty, tiny bowl?” he shouted and ordered his assistant to fill it with diamonds, pearls and other precious stones. The bowl was filled, but the king and courtiers were shocked. As the gems fell into the bowl, they disappeared. It was filled many times, and each time the bowl turned empty. “I will not lose to a beggar. Even if all my treasures are emptied, no hassle. Fill the bowl,” ordered the king. Soon the treasures were emptied. Everything just disappeared in the bowl.
At last the king pleaded with the beggar. “What’s the secret?”
“Simple,” laughed the beggar. “I made the bowl of human ego. Nothing can completely fill a man’s ego.”