It is narrated from Sayyiduna Abu Umamah al-Bahili (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "My Pool is as vast as the distance between Aden and Oman. In it are cups as numerous as the stars of the sky; whoever drinks from it will never be thirsty after that. And among those of my Ummah who will come to it will be people with dishevelled hair and soiled clothes, who are not able to marry women accustomed to luxury, nor do they attend at the doors of the rulers' courts; those who fulfil all that is owed by them, yet are not given all that is owed to them."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7515