عَنْ أَبِي أَيُّوبَ اَلْأَنْصَارِيِّ - رضى الله عنه - أَنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -قَالَ: { مَنْ صَامَ رَمَضَانَ, ثُمَّ أَتْبَعَهُ سِتًّا مِنْ شَوَّالٍ كَانَ كَصِيَامِ اَلدَّهْرِ } رَوَاهُ مُسْلِمٌ
Abu Aiyub Al-Ansari (RAA) narrated that The Messenger of Allah (ﷺ) said:“Whoever fasts during the month of Ramadan and then follows it with six days of Shawwal will be (rewarded) as if he had fasted the entire year.” Related by Muslim.