Messenger of Allah ﷺ said, "The food for two persons is sufficient for three, and the food of three persons is sufficient for four persons."  

أَنَّهُ قَالَ قَالَ رَسُولُ اللَّهِ ﷺ طَعَامُ الاِثْنَيْنِ كَافِي الثَّلاَثَةِ وَطَعَامُ الثَّلاَثَةِ كَافِي الأَرْبَعَةِ