Sunan at-Tirmithiy كتاب الصوم باب ما جاء فى فضل الصوم

حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ حَدَّثَنَا أَبُو عَامِرٍ الْعَقَدِىُّ عَنْ هِشَامِ بْنِ سَعْدٍ عَنْ أَبِى حَازِمٍ عَنْ سَهْلِ بْنِ سَعْدٍ عَنِ النَّبِىِّ صلى الله عليه وسلم قَالَ إِنَّ فِى الْجَنَّةِ لَبَابًا يُدْعَى الرَّيَّانَ يُدْعَى لَهُ الصَّائِمُونَ فَمَنْ كَانَ مِنَ الصَّائِمِينَ دَخَلَهُ وَمَنْ دَخَلَهُ لَمْ يَظْمَأْ أَبَدًا. قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ غَرِيبٌ.
The Prophet, peace and blessings of God be upon him, said, "Indeed, in paradise, there is a gate called ar-Rayyān (1), to which those who used to fast are summoned. Only those who used to fast will go through this gate, and whoever goes through it will never thirst."
(1) One of the gates of paradise, reserved on the Day of Judgment, for those who often observe fasting.