Amr bin Shu`aib (May Allah be pleased with him)on the authority of his father who heard it from his father reported: Messenger of Allah (Peace Be Upon Him) said: "He is not one of us who shows no mercy to younger ones and does not acknowledge the honour due to our elders". [At-Tirmidhi and Abu Dawud].

Commentary: The words "he is not one of us'' here mean that he is not following the way of the Prophet (PBUH). To show compassion to youngster means showing kindness and generosity to them. On the same principle, it is essential for the young that they respect the elders, the learned and the pious.