Musnad Ahmad 27:1702

Abu al-Mughirah narrated to us, Umar ibn Amr Abu Uthman al-Ahmusi narrated to us, al-Mukhariq ibn Abi al-Mukhariq narrated to me, from Abdullah ibn Umar, that he heard him say: The Messenger of Allah (peace and blessings of Allah be upon him) said: "My cistern is as [the distance] between Aden and Amman. It is colder than snow, sweeter than honey, and more pleasant in scent than musk. Its cups are like the stars of the sky. Whoever drinks a drink from it will never thirst after it ever again. The first of the people to arrive at it will be the destitute of the Emigrants." A speaker said: "And who are they, O Messenger of Allah?" He said: "Those with disheveled heads, pale faces, and dirty clothes. The doors are not opened for them, they do not marry women of luxury, they give every right that is upon them, but they do not take that which is for them."