Quran 18:22 — The Cave (Al-Kahf)

Some would say, "They were three; their dog being the fourth," while others would say, "Five; the sixth being their dog," as they guessed. Others said, "Seven," and the eighth was their dog. Say, "My Lord is the best knower of their number." Only a few knew the correct number. Therefore, do not argue with them; just go along with them. You need not consult anyone about this.

[18:21] We caused them to be discovered, to let everyone know that GOD's promise is true, and to remove all doubt concerning the end of the world.* The people then disputed among themselves regarding them. Some said, "Let us build a building around them." Their Lord is the best knower about them. Those who prevailed said, "We will build a place of worship around them."

[18:23] You shall not say that you will do anything in the future,