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  

I heard Allah'. s Messenger ﷺ as saying: Food for one person suffices two persons and food for two persons suffices four persons, and food for four persons suffices eight persons; and in the tradition transmitted on the authority of Ishaq there is no mention of the fact that he heard it directly (from the Holy Prophet).  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ طَعَامُ الْوَاحِدِ يَكْفِي الاِثْنَيْنِ وَطَعَامُ الاِثْنَيْنِ يَكْفِي الأَرْبَعَةَ وَطَعَامُ الأَرْبَعَةِ يَكْفِي الثَّمَانِيَةَ وَفِي رِوَايَةِ إِسْحَاقَ قَالَ رَسُولُ اللَّهِ ﷺ لَمْ يَذْكُرْ سَمِعْتُ  

Food for one suffices two and food for two suffices for four.  

قَالَ رَسُولُ اللَّهِ ﷺ طَعَامُ الْوَاحِدِ يَكْفِي الاِثْنَيْنِ وَطَعَامُ الاِثْنَيْنِ يَكْفِي الأَرْبَعَةَ