It wasnarrated from Sahl bin Sa'd that the Prophet (ﷺ) said:
"InParadise there is a gate called Rayyan. On the Day of Resurrectionthecall will go out saying: 'Where are those who used to fast?'Whoeveris among those who used to fast will enter it, and whoeverenters itwill never thirst again." (JA)
English reference (JA): Vol. 1, Book 7, Hadith 1640 (JA)
Arabic reference (JA): Book 7, Hadith 1709 (JA)