´It was narrated from Abu Ayyub that the Messenger of Allah (ﷺ) said:` “Whoever fasts Ramadan then follows it with six days of Shawwal, it is as if he fasted for a lifetime.”
Hadith ReferenceSunan Ibn Majah / The Book of Fasting / Hadith: 1716
Hadith Gradingالألبانی:حسن صحيح | زبیر علی زئی:صحيح مسلم