The Prophet ﷺ said, "There is a gate in Paradise called ar-Rayyan, through which only those who fasted will enter. When the last of them has entered, it will be closed. Whoever enters through it will drink, and whoever drinks will never thirst again."
أخبرنا علي بن حجر قال أنبأنا سعيد بن عبد الرحمن عن أبي حازم
عن النبي ﷺ قال للصائمين باب في الجنة يقال له الريان لا يدخل فيه أحد غيرهم فإذا دخل آخرهم أغلق من دخل فيه شرب ومن شرب لم يظمأ أبدا
[Its chain of transmission is sahih] Ahmad narrated it: 5/335, from the hadith of Saeed bin Abdul-Rahman, with this wording. It is also in Al-Kubra, hadith no. 2544. Bukhari also narrated it, hadith no. 1896, and Muslim, hadith no. 1152, from the hadith of Abu Hazim, with this wording.