It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: The food of one person is enough for two people, the food of two is enough for four, and the food of four is enough for eight people.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 14389
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد قوي، م: 2059