Sahih Muslim 2711
صحيح مسلم#2711SahihAbu Sa'id al Khudri (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying:Every servant of Allah who observes fast for a day in the way of Allah, Allah would remove, because of this day, his face farther from the Fire (of Hell) to the extent of seventy years' distance
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 13:217