in Paradise there is a gate called Ar'Rayyan, it will be said on the Day of Resurrection: "Where are those who used to fast? Would you like to enter through Ar-Rayyan?" whoever enters through it will never thirst again. Then when they have entered it will be closed behind them, and no one but they will enter through it.
Sunan an-Nasa'i Book 22, Hadith 148
← Previous Hadith "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."

Sunan an-Nasa'i Book 22, Hadith 147 Next Hadith → "Whoever spends on a pair (of things) in the cause of Allah, the Mighty and Sublime, he will be called in Paradise: 'O slave of Allah, here is prosperity, Whoever is one of the people of Salah, he will be called from the gate of salah. Whoever is on of the people of charity, he will be called from the gate of Ar-Rayyan.' Abu Bakr As-Siddiq said: 'O Messenger of Allah, no distress or need will befall the one who is called from those gates. Will there be anyone who will be called from all these gates?' The Messenger of Allah said: 'Yes, and I hope that you will be one of them."'

Sunan an-Nasa'i Book 22, Hadith 149