Abu 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.
This hadith has been narrated by Suhail with the same chain of transmitters.
Abu Sa'id al-Khudri (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying
He who observes fast for a day in the way of Allah He would remove his face from the Hell to the extent of seventy years' distance.