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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:8431 – Abū ʿAbdullāh al-Ḥāfiẓ > Abū al-ʿAbbās Muḥammad b. Yaʿqūb b. Yūsuf > Muḥammad b. Isḥāq al-Ṣaghānī > Muḥāḍir b. al-Muwarriʿ > Saʿd b. Saʿīd al-Anṣārī > ʿAmr b. Thābit al-Anṣārī > Abū Ayyūb al-Anṣārī

[Machine] I heard the Messenger of Allah ﷺ say: "Whoever fasts Ramadan and follows it with six days from the month of Shawwal, it is as if he fasted the entire year."  

البيهقي:٨٤٣١ – أَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ بْنِ يُوسُفَ ثنا مُحَمَّدُ بْنُ إِسْحَاقَ الصَّغَانِيُّ أنبأ مُحَاضِرُ بْنُ الْمُوَرِّعِ ثنا سَعْدُ بْنُ سَعِيدٍ الْأَنْصَارِيُّ قَالَ أَخْبَرَنِي عَمْرُو بْنُ ثَابِتٍ الْأَنْصَارِيُّ قَالَ سَمِعْتُ أَبَا أَيُّوبَ الْأَنْصَارِيَّ ؓ قَالَ

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ مَنْ صَامَ رَمَضَانَ ثُمَّ أَتْبَعَهُ سِتًّا مِنْ شَوَّالٍ فَذَاكَ صِيَامُ الدَّهْرِ  

أَخْرَجَهُ مُسْلِمٌ فِي الصَّحِيحِ مِنْ حَدِيثِ إِسْمَاعِيلَ بْنِ جَعْفَرٍ وَعَبْدِ اللهِ بْنِ نُمَيْرٍ وَعَبْدِ اللهِ بْنِ الْمُبَارَكِ عَنْ سَعْدِ بْنِ سَعِيدٍ أَخِي يَحْيَى بْنِ سَعِيدٍ