Sahih Muslim · Hadith 2766

حدثنا أبو بكر بن أبي شيبة، حدثنا خالد بن مخلد، - وهو القطواني - عن سليمان، بن بلال حدثني أبو حازم، عن سهل بن سعد، - رضى الله عنه - قال قال رسول الله صلى الله عليه وسلم ‏"‏ إن في الجنة بابا يقال له الريان يدخل منه الصائمون يوم القيامة لا يدخل معهم أحد غيرهم يقال أين الصائمون فيدخلون منه فإذا دخل آخرهم أغلق فلم يدخل منه أحد ‏"‏ ‏.‏

Sahl b. Sa'd (Allah be pleased with him) reported Allah's Messenger (may peace be upon him) as saying: In Paradise there is a gate which is called Rayyan through which only the observers of fast would enter on the Day on Resurrection. None else would enter along with them. It would be proclaimed: Where are the observers of fast that they should be admitted into it? -and when the last of them would enter, it would be closed and no one would enter it.

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).