Bulugh al-Maram 5 Fasting كتاب الصيام 32

وَعَنْ 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 1 . 1 – صحيح. رواه مسلم ( 1164 ).

Abu Aiyub Al-Ansari (RAA) narrated that The Messenger of Allah (صلى الله عليه وسلم) 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.