22nd Ayah from Surah Al Kahf
Sahih International
They will say there were three, the fourth of them being their dog; and they will say there were five, the sixth of them being their dog - guessing at the unseen; and they will say there were seven, and the eighth of them was their dog. Say, [O Muhammad], "My Lord is most knowing of their number. None knows them except a few. So do not argue about them except with an obvious argument and do not inquire about them among [the speculators] from anyone."
Abdul Haleem
[Some] say, ‘The sleepers were three, and their dog made four,’ others say, ‘They were five, and the dog made six’- guessing in the dark- and some say, ‘They were seven, and their dog made eight.’ Say [Prophet], ‘My Lord knows best how many they were.’ Only a few have real knowledge about them, so do not argue, but stick to what is clear, and do not ask any of these people about them;
Mohsin Khan/Hilali
(Some) say they were three, the dog being the fourth among them; (others) say they were five, the dog being the sixth, guessing at the unseen; (yet others) say they were seven, the dog being the eighth. Say (O Muhammad SAW): "My Lord knows best their number; none knows them but a few." So debate not (about their number, etc.) except with the clear proof (which We have revealed to you). And consult not any of them (people of the Scripture, Jews and Christians) about (the affair of) the people of the Cave.
Taqi Usmani
Some will say, “(They were) three, the fourth of them being their dog,” and some will say, “Five, the sixth of them being their dog, just making conjectures.” And others will say, “Seven, the eighth of them is their dog.” Say, “My Lord knows best about their number.” No one knows them except a few, so do not argue about them except an apparent argumentation. And do not ask anyone of these about them.
Pickthall
(Some) will say: They were three, their dog the fourth, and (some) say: Five, their dog the sixth, guessing at random; and (some) say: Seven, and their dog the eighth. Say (O Muhammad): My Lord is Best Aware of their number. None knoweth them save a few. So contend not concerning them except with an outward contending, and ask not any of them to pronounce concerning them.
Pickthall
(Some) say they were three, the dog being the fourth among them; (others) say they were five, the dog being the sixth,- doubtfully guessing at the unknown; (yet others) say they were seven, the dog being the eighth. Say thou: "My Lord knoweth best their number; It is but few that know their (real case)." Enter not, therefore, into controversies concerning them, except on a matter that is clear, nor consult any of them about (the affair of) the Sleepers.