Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
nasai-kubra:3262Isḥāq b. Ibrāhīm > ʿĪsá b. Yūnus > ʿAwf > Muḥammad > Abū Hurayrah

[Machine] On the authority of the Prophet ﷺ , he said, "If a person who is fasting happens to eat or drink forgetfully, then let him complete his fasting, for indeed it is Allah who has fed him and given him drink." (Hadith 3263) Isaac ibn Ibrahim informed us that Isa ibn Yunus narrated from Hisham who narrated from Muhammad who narrated from Abu Hurairah, who heard the Prophet ﷺ saying similar words to the above.  

الكبرى للنسائي:٣٢٦٢أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ قَالَ أَخْبَرَنَا عِيسَى بْنُ يُونُسَ قَالَ حَدَّثَنَا عَوْفٌ عَنْ مُحَمَّدٍ عَنْ أَبِي هُرَيْرَةَ

عَنِ النَّبِيِّ ﷺ قَالَ «إِذَا أَكَلَ الصَّائِمُ نَاسِيًا أَوْ شَرِبَ نَاسِيًا فَلْيُتِمَّ صِيَامَهُ فَإِنَّمَا أَطْعَمُهُ اللهُ وَسَقَاهُ» [357] 3263 أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ قَالَ أَخْبَرَنَا عِيسَى بْنُ يُونُسَ عَنْ هِشَامٍ عَنْ مُحَمَّدٍ عَنْ أَبِي هُرَيْرَةَ عَنِ النَّبِيِّ ﷺ مِثْلَهُ