Sunan Ibn Majah, Book 7, Hadith 1745 (In-Book) ⓘ
It was narrated that Abu Masruq said: “I heard Fadalah bin ‘Ubaid Al- Ansari narrating that the Prophet came out to them on a day when he was fasting. He called for a vessel and drank. We said: ‘O Messenger of Allah, you were fasting today.’ He said: ‘Yes, but I vomited.’”
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا يَعْلَى، وَمُحَمَّدُ، ابْنَا عُبَيْدٍ الطَّنَافِسِيِّ قَالاَ حَدَّثَنَا مُحَمَّدُ بْنُ إِسْحَاقَ، عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ، عَنْ أَبِي مَرْزُوقٍ، قَالَ سَمِعْتُ فَضَالَةَ بْنَ عُبَيْدٍ الأَنْصَارِيَّ، يُحَدِّثُ أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ خَرَجَ عَلَيْهِمْ فِي يَوْمٍ كَانَ يَصُومُهُ فَدَعَا بِإِنَاءٍ فَشَرِبَ فَقُلْنَا يَا رَسُولَ اللَّهِ إِنَّ هَذَا يَوْمٌ كُنْتَ تَصُومُهُ . قَالَ " أَجَلْ وَلَكِنِّي قِئْتُ " .
also referenced under: Hadith 1675 (Reference) & Volume 2, Book 7, Hadith 1675 (DarusSalam)