Sunan Ibn Majah, Book 37, Hadith 4287 (In-Book) ⓘ
It was narrated from Abu ‘Ubaidah that ‘Abdullah said: “The Messenger of Allah said: ‘The family of Muhammad has only a Mudd of food,’ or ‘The family of Muhammad does not have even a Mud of food.’”
حَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى، حَدَّثَنَا أَبُو الْمُغِيرَةِ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ عَبْدِ اللَّهِ الْمَسْعُودِيُّ، عَنْ عَلِيِّ بْنِ بَذِيمَةَ، عَنْ أَبِي عُبَيْدَةَ، عَنْ عَبْدِ اللَّهِ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " مَا أَصْبَحَ فِي آلِ مُحَمَّدٍ إِلاَّ مُدٌّ مِنْ طَعَامٍ " . أَوْ " مَا أَصْبَحَ فِي آلِ مُحَمَّدٍ مُدٌّ مِنْ طَعَامٍ " .
also referenced under: Hadith 4148 (Reference) & Volume 5, Book 37, Hadith 4148 (DarusSalam)