Narrator:Abu Hurayrah
حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا ابْنُ لَهِيعَةَ، عَنْ أَبِي الأَسْوَدِ، عَنْ عُرْوَةَ بْنِ الزُّبَيْرِ، وَسُلَيْمَانَ بْنِ يَسَارٍ، أَنَّهُمَا حَدَّثَاهُ عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ
" مَنْ صَامَ يَوْمًا فِي سَبِيلِ اللَّهِ زَحْزَحَهُ اللَّهُ عَنِ النَّارِ سَبْعِينَ خَرِيفًا "
Narrated Abu Al-Aswad :
From 'Urwah [bin Az-Zubair], and Sulaiman bin Yasar, that they reported to him from Abu Hurairah that the Prophet (ﷺ) said: "Whoever fasts a day in the cause of Allah, Allah shall distance him from the Fire by seventy autumns." One of them said "seventy" and the other said: "forty".
[Abu 'Eisa said:] This Hadith is a Gharib Hadith from this route. Abu Al-Aswad's name is Muhammad bin 'Abdur-Rahman bin Nawfal Al-Asadi Al-Madani.
There are narrations on this topic from Abu Sa'eed, Anas, 'Uqbah bin 'Amir, and Abu Umamah
Reported by At-Tirmidhi (No. 1622), An-Nasa’i (No. 2244, 2246), Ibn Majah (No. 1718) and Ahmad (No. 7649).