DARIMI 1795:
from Abū Ayyūb —
[Machine] From the Prophet ﷺ , he said, "Whoever fasts Ramadan and then follows it with six days of Shawwal, it is as if he has fasted for a lifetime."
الدارمي ١٧٩٥:
عن ابو ايوب —
عَنِ النَّبِيِّ ﷺ قَالَ «مَنْ صَامَ رَمَضَانَ ثُمَّ أَتْبَعَهُ سِتَّةً مِنْ شَوَّالٍ فَذَلِكَ صِيَامُ الدَّهْرِ»