سورة Al-Kahf ( The Cave ) - الآية 22

Some will say: \"They were three, and their dog was the fourth;\" and some will also say: \"They were five and their dog was the sixth,\" -- guessing in the dark. And some will even say: \"They were seven, and their dog the eighth.\" Say: \"My Lord alone knows best their number; none but only a few know of them.\" So do not argue about it with them but lightly, and do not enquire about them from any one of them.