It is narrated from Sayyiduna Ali (may Allah be pleased with him) that I was present in the service of the Prophet (peace and blessings be upon him) when the two Shaykhs (may Allah be pleased with them both) were seen coming from the front. The Prophet (peace and blessings be upon him) said: "Ali! These two are the leaders of all the elders and youths of Paradise, except for the Prophets and Messengers."