(33) باب فَضِيلَةِ الْمُوَاسَاةِ فِي الطَّعَامِ الْقَلِيلِ وَأَنَّ طَعَامَ الاِثْنَيْنِ يَكْفِي الثَّلاَثَةَ وَنَحْوِ ذَلِكَ
Abu Huraira reported Allah's Messenger (ﷺ) as saying:
Food for two persons suffices three persons and food for three persons suffices four persons.
Reference: Sahih Muslim 2058
In-book reference: Book 36, Hadith 241
USC-MSA web (English) reference(deprecated numbering scheme): Book 23, Hadith 5108