Sunan Ibn Majah, Volume 4, Book 29, Hadith 3299 (DarusSalam) ⓘ
It was narrated that Anas bin Malik – a man from the tribe of Banu ‘Abdul-Ashhal – said: * “I came to the Prophet when he was eating breakfast and he said: ‘Come and eat.’ I said: ‘I am fasting. Alas! Would that I had eaten of the food of the Messenger of Allah.’”
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَعَلِيُّ بْنُ مُحَمَّدٍ، قَالاَ حَدَّثَنَا وَكِيعٌ، عَنْ أَبِي هِلاَلٍ، عَنْ عَبْدِ اللَّهِ بْنِ سَوَادَةَ، عَنْ أَنَسِ بْنِ مَالِكٍ، - رَجُلٌ مِنْ بَنِي عَبْدِ الأَشْهَلِ - قَالَ أَتَيْتُ النَّبِيَّ ـ صلى الله عليه وسلم ـ وَهُوَ يَتَغَدَّى فَقَالَ " ادْنُ فَكُلْ " . فَقُلْتُ إِنِّي صَائِمٌ فَيَا لَهْفَ نَفْسِي هَلاَّ كُنْتُ طَعِمْتُ مِنْ طَعَامِ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ .
also referenced under: Hadith 3299 (Reference) & Book 29, Hadith 3424 (In-Book)