The deciple was confused since he couldn't see any dirt on his body but his Guru had repeatedly instructed him to remove the dirt and then come to the class
The deciple once again stood in front of the mirror and thourougly checked his image but his body was clean
He confidently walked up to his Guru and said 'i am clean and no dirt'
Guru said, if so, then why are still stealing snacks in the kitchen because you are searching for external dirt while the actual dirt is in your heart, so go and clean that by realising your mistake and correcting your thoughts
The deciple understood the darker side of his personality and vowed to bring a change in his quality