Read and reflect on verse 2162 from Surah Al-Kahf: [And in times to come] some will say, "[They were] three, the fourth of them being their dog," while others will say, "Five, with their dog as the six...
سَيَقُولُونَ ثَلَاثَةٌ رَابِعُهُمْ كَلْبُهُمْ وَيَقُولُونَ خَمْسَةٌ سَادِسُهُمْ كَلْبُهُمْ رَجْمًا بِالْغَيْبِ ۖ وَيَقُولُونَ سَبْعَةٌ وَثَامِنُهُمْ كَلْبُهُمْ ۚ قُلْ رَبِّي أَعْلَمُ بِعِدَّتِهِمْ مَا يَعْلَمُهُمْ إِلَّا قَلِيلٌ ۗ فَلَا تُمَارِ فِيهِمْ إِلَّا مِرَاءً ظَاهِرًا وَلَا تَسْتَفْتِ فِيهِمْ مِنْهُمْ أَحَدًا
[And in times to come] some will say, "[They were] three, the fourth of them being their dog," while others will say, "Five, with their dog as the sixth of them" -idly guessing at something of which they can have no knowledge -and [so on, until] some will say, "[They were] seven, the eighth of them being their dog." Say: "My Sustainer knows best how many they were. None but a few have any [real] knowledge of them. Hence, do not argue about them otherwise than by way of an obvious argument, and do not ask any of those [story-tellers] to enlighten thee about them."