Ash-Shama'il Al-Muhammadiyah, Book 9, Hadith 72 (In-Book)

Malik bin Dinar relates: The Prophet (S) never ever filled his stomach with bread, nor with meat except in the situation of dafaf. Malik bin Dinar asked a Bedouin man: What is dafaf? He responded: That he would eat with the people.

حَدَّثَنَا قُتَيْبَةُ ‏,‏ حَدَّثَنَا جعفر بن سليمان الضبعي ‏,‏ عن مالك بن دينار قال‏:‏ مَا شَبِعَ رَسُولِ اللهِ صلى الله عليه وسلم مِنْ خُبْزٍ قَط ‏,‏ وَلَحم إِلاَّ عَلى ضفَفَ‏.‏

also referenced under: Book 9, Hadith 68 (English)