Sahih al-Bukhari 3257
Book 59: Beginning of Creation · Narrated by Sahl bin Sa`d
Arabic
حَدَّثَنَا سَعِيدُ بْنُ أَبِي مَرْيَمَ، حَدَّثَنَا مُحَمَّدُ بْنُ مُطَرِّفٍ، قَالَ حَدَّثَنِي أَبُو حَازِمٍ، عَنْ سَهْلِ بْنِ سَعْدٍ ـ رضى الله عنه ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " فِي الْجَنَّةِ ثَمَانِيَةُ أَبْوَابٍ، فِيهَا باب يُسَمَّى الرَّيَّانَ لاَ يَدْخُلُهُ إِلاَّ الصَّائِمُونَ ".
English translation
Narrated Sahl bin Sa`d:The Prophet (ﷺ) said, "Paradise has eight gates, and one of them is called Ar-Raiyan through which none will enter but those who observe fasting
Reference: Sahih al-Bukhari 3257, Book of Beginning of Creation. English translation by Dr. Muhammad Muhsin Khan.