سورة Al-Kahf ( The Cave ) - الآية 22

They will say, ‘[They are] three; their dog is the fourth of them,’ and say, ‘[They are] five, their dog is the sixth of them,’ taking a shot at the invisible. They will say, ‘[They are] seven, their dog is the eighth of them.’ Say, ‘My Lord knows best their number, and none knows them except a few.’ So do not dispute concerning them, except for a seeming dispute, and do not question about them any of them.