Dhammapada Verse 25
The Story of Culapanthaka
The banker had two grandsons, named Mahapanthaka and Culapanthaka. Mahapanthaka, being the elder, used to accompany his grandfather to listen to religious discourses. Later, Mahapanthaka joined the Buddhist religious Order and in course of time became an arahat. Culapanthaka followed his brother and became a bhikkhu. But, because in a previous existence in the time of Kassapa Buddha, Culapanthaka had made fun of a bhikkhu who was very dull, he was born a dullard in the present existence. He could not even memorize one verse in four months. Mahapanthaka was very disappointed with his younger brother and even told him that he was not worthy of the Order.