Mujahid says: A man came to Sayyiduna Hasan and Sayyiduna Husayn (may Allah be pleased with them) and asked them for something, so they said: Asking is only permissible for three types of people: one in severe need, or under a heavy guarantee, or in crushing debt. Then they gave him what he needed. Then he went to Sayyiduna Ibn Umar (may Allah be pleased with them) and he also gave him something, without asking anything. The man said: I went to your cousins and they questioned me, but you did not. Ibn Umar (may Allah be pleased with them) said: They are the sons of the Messenger of Allah (peace and blessings be upon him), and they make knowledge into morsels and teach it.