وَعَنْ أَبِي هُرَيْرَةَ ‏- رضى الله عنه ‏- قَالَ: قَالَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-{ مَنْ نَسِيَ وَهُوَ صَائِمٌ, فَأَكَلَ أَوْ شَرِبَ, فَلْيُتِمَّ صَوْمَهُ, فَإِنَّمَا أَطْعَمَهُ اَللَّهُ وَسَقَاهُ } مُتَّفَقٌ عَلَيْهِ 1‏ .‏‏1 ‏- صحيح.‏ رواه البخاري ( 1933 )‏، ومسلم ( 1155 )‏، واللفظ لمسلم.‏

‘Whoever forgets that he is fasting, and eats or drinks is to complete his fast, as it was Allah who fed him and gave him something to drink." Agreed upon.