وَعَنْ أَبِي هُرَيْرَةَ ‏- رضى الله عنه ‏- قَالَ: قَالَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-{ لَا يَصُومَنَّ أَحَدُكُمْ يَوْمَ اَلْجُمُعَةِ, إِلَّا أَنْ يَصُومَ يَوْمًا قَبْلَهُ, أَوْ يَوْمًا بَعْدَهُ } مُتَّفَقٌ عَلَيْهِ 1‏.‏

‏1 ‏- صحيح.‏ رواه البخاري ( 1985 )‏، ومسلم ( 1144 )‏ ( 147 )‏، وتصرف الحافظ في بعض ألفاظه.‏

Translation
Abu Hurairah (RAA) narrated that The Messenger of Allah (ﷺ) said

‘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.