An uncle and nephew were leading the Holy Life. One day the nephew received two pieces of cloth and he presented one to his uncle but he declined the offer. He was displeased and planned to leave the Order while fanning his uncle. He thought that he would sell one piece of cloth and buy a she-goat and earn some money. Eventually he would get married and would have a son. Then he would pay a visit to his uncle with his wife and child. On the way his wife would accidentally kill his child and he would get angry and beat his wife. Day dreaming thus he struck his uncle with the fan. The uncle read his thoughts and brought him to his senses. The nephew felt ashamed, dropped the fan and ran away. The monks seized him and brought him to the Buddha's presence. The Buddha described the fleeting nature of the mind.
Dhammapada, translated by Venerable Nàrada