“In Paradise there is a gate called Rayyan. On the Day of Resurrection the call will go out saying: ‘Where are those who used to fast?’ Whoever is among those who used to fast will enter it, and whoever enters it will never experience thirst again.”  

أَنَّ النَّبِيَّ ﷺ قَالَ إِنَّ فِي الْجَنَّةِ بَابًا يُقَالُ لَهُ الرَّيَّانُ يُدْعَى يَوْمَ الْقِيَامَةِ يُقَالُ أَيْنَ الصَّائِمُونَ؟ فَمَنْ كَانَ مِنَ الصَّائِمِينَ دَخَلَهُ وَمَنْ دَخَلَهُ لَمْ يَظْمَأْ أَبَدًا  

"For those who fast there is a gate in Paradise called Ar-Rayyan, through which no one but they will enter. When the last of them has entered it, it will be closed. Whoever enters through it will drink, and whoever drinks will never thirst again." (Using translation from Nasāʾī 2236)   

قَالَ رَسُولُ اللهِ ﷺ إِنَّ لِلصَّائِمِينَ بَابًا فِي الْجَنَّةِ يُقَالُ لَهُ الرَّيَّانُ لَا يَدْخُلُ مِنْهُ غَيْرُهُمْ إِذَا دَخَلَآخِرُهُمْ أُغْلِقَ مَنْ دَخَلَ مِنْهُ شَرِبَ وَمَنْ شَرِبَ مِنْهُ لَمْ يَظْمَأْ أَبَدًا