There would be before you a Cistern (as extensive) as there is the distance between Jarba' and Adhruh and there would be jugs like stars in the sky; he who would come to that and drink from it would never feel thirsty after that.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِنَّ أَمَامَكُمْ حَوْضًا كَمَا بَيْنَ جَرْبَا وَأَذْرُحَ فِيهِ أَبَارِيقُ كَنُجُومِ السَّمَاءِ مَنْ وَرَدَهُ فَشَرِبَ مِنْهُ لَمْ يَظْمَأْ بَعْدَهَا أَبَدًا  

There would be before you a Cistern (as extensive) as there is the distance between Jarba' and Adhruh and there would be jugs like stars in the sky; he who would come to that and drink from it would never feel thirsty after that. (Using translation from Muslim 2299e)  

قَالَ رَسُولُ اللهِ ﷺ إِنَّ أَمَامَكُمْ حَوْضًا كَمَا بَيْنَ جَرْبَاءَ وَأَذْرُحَ فِيهِ أَبَارِيقُ كَنُجُومِ السَّمَاءِ مَنْ وَرَدَهُ فَشَرِبَ مِنْهُ لَمْ يَظْمَأْ بَعْدَهَا أَبَدًا