Food for two persons suffices three persons and food for three persons suffices 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  

A hadith like this is reported on the authority of Jabir but with a different chain of transmitters.  

عَنِ النَّبِيِّ ﷺ بِمِثْلِ حَدِيثِ ابْنِ جُرَيْجٍ  

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

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

Food for one (person) suffices two, and food for two (persons) suffices four persons and food for four persons suffices eight persons.  

عَنِ النَّبِيِّ ﷺ قَالَ طَعَامُ الرَّجُلِ يَكْفِي رَجُلَيْنِ وَطَعَامُ رَجُلَيْنِ يَكْفِي أَرْبَعَةً وَطَعَامُ أَرْبَعَةٍ يَكْفِي ثَمَانِيَةً