Sunan an-Nasa'i, Hadith 2325 ⓘ
It was narrated that 'Aishah said: "The Messenger of Allah came to us one day and we said: 'We have been given some Hais and we set aside some for you.' He said: 'I am fasting, but he broke his fast.
أَخْبَرَنَا أَحْمَدُ بْنُ حَرْبٍ، قَالَ حَدَّثَنَا قَاسِمٌ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ طَلْحَةَ بْنِ يَحْيَى، عَنْ عَائِشَةَ بِنْتِ طَلْحَةَ، عَنْ عَائِشَةَ أُمِّ الْمُؤْمِنِينَ، قَالَتْ أَتَانَا رَسُولُ اللَّهِ صلى الله عليه وسلم يَوْمًا فَقُلْنَا أُهْدِيَ لَنَا حَيْسٌ قَدْ جَعَلْنَا لَكَ مِنْهُ نَصِيبًا . فَقَالَ " إِنِّي صَائِمٌ " . فَأَفْطَرَ .
also referenced under: Book 22, Hadith 236 (In-Book) & Volume 3, Book 22, Hadith 2327 (DarusSalam)