[Machine] O Abu Muhammad, in what the Prophet (PBUH) narrated from his Lord, every action of the son of Adam is for him except fasting for it is for Me and I will reward him for it. Ibn ‘Uyaynah said: This is from the most generous and firmest of narrations. When it is the Day of Judgment, Allah (SWT) will hold His servant accountable and settle all his injustices from his other actions, until nothing remains except fasting. Allah (SWT) will then take on what remains of his injustices and admit him into paradise through his fasting.
يَا أَبَا مُحَمَّدٍ فِيمَا يَرْوِيهِ النَّبِيُّ ﷺ عَنْ رَبِّهِ ﷻ كُلُّ عَمَلِ ابْنِ آدَمَ لَهُ إِلَّا الصَّوْمَ فَإِنَّهُ لِي وَأَنَا أَجْزِي بِهِ فَقَالَ ابْنُ عُيَيْنَةَ هَذَا مِنْ أَجْوَدِ الْأَحَادِيثِ وَأَحْكَمِهَا إِذَا كَانَ يَوْمُ الْقِيَامَةِ يُحَاسِبُ اللهُ ﷻ عَبْدَهُ وَيُؤَدِّي مَا عَلَيْهِ مِنَ الْمَظَالِمِ مِنْ سَائِرِ عَمَلِهِ حَتَّى لَا يَبْقَى إِلَّا الصَّوْمُ فَيَتَحَمَّلُ اللهُ مَا بَقِيَ عَلَيْهِ مِنَ الْمَظَالِمِ وَيُدْخِلُهُ بِالصَّوْمِ الْجَنَّةَ