BUKHARI 3257:
from Sahl b. Saʿd —
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."
البخاري ٣٢٥٧:
عن سهل بن سعد —
عَنِ النَّبِيِّ ﷺ قَالَ فِي الْجَنَّةِ ثَمَانِيَةُ أَبْوَابٍ فِيهَا باب يُسَمَّى الرَّيَّانَ لاَ يَدْخُلُهُ إِلاَّ الصَّائِمُونَ