عَنْ أَبِی أَیُّوبَ، قَالَ قَالَ رَسُولُ اللہِ صلّى اللّٰہ عليه وسلّم مَنْ صَامَ رَمَضَانَ ثُمَّ أَتْبَعَہُ بِسِتٍّ مِنْ شَوَّالٍ، کَانَ کَصَوْمِ الدَّھْرِ
Hazrat Abu Ayyubra narrates that the Holy Prophetsa said:
“Whoever fasts throughout Ramadan and then follows it with six days of Shawal, it is as if he fasted for a lifetime.”
(Sunan Ibn Majah, Kitab as-siyam, Hadith 1716)