18. Al-Kahf (The Cave)

Surah: 18   Aya: 26

26. Quli Allahu aAAlamu bima labithoo lahu ghaybu alssamawati waal-ardi absir bihi waasmiAA ma lahum min doonihi min waliyyin wala yushriku fee hukmihi ahadan
  

  Translation

26. Say: "Allâh knows best how long they stayed. With Him is (the knowledge of) the unseen of the heavens and the earth. How clearly He sees, and hears (everything)! They have no Walî (Helper, Disposer of affairs, Protector, etc.) other than Him, and He makes none to share in His Decision and His Rule."