Narrated Abu Hurairah: A man came to the Prophet (ﷺ) and said: Messenger of Allah, I ate and drank in forgetfulness when I was fasting. Hie said: Allah had fed you and given you drink
SahihSahihIsnaad Sahih Sahih Bukhari (1933) Sahih Muslim (1155)Book 14 · Hadith 86