The keys of the Unseen are in His possession. No one knows them but Him. He knows everything in the land and sea. No leaf falls without His knowing it. There is no seed in the darkness of the earth, and nothing moist or dry which is not in a Clear Book. (Qur'an, 6:59)
Say: 'No one in the heavens and the earth knows the Unseen except Allah.' They are not aware of when they will be raised. (Qur'an, 27:65)
They will ask you about the Hour: when is it due? Say: 'Knowledge of it rests with my Lord alone. He alone will reveal it at its proper time. It hangs heavy in the heavens and the earth. It will not come upon you except suddenly.' They will ask you as if you had full knowledge of it. Say: 'Knowledge of it rests with Allah alone. But most people do not know that.' (Qur'an, 7:187)
Truly Allah has knowledge of the Hour and sends down abundant rain and knows what is in the womb. And no self knows what it will earn tomorrow and no self knows in what land it will die. Allah is All-Knowing, All-Aware. (Qur'an, 31:34)
And when Allah says, ''Isa son of Maryam! Did you say to people, "Take me and my mother as gods besides Allah?"' he will say, 'Glory be to You! It is not for me to say what I have no right to say! If I had said it, then You would have known it. You know what is in my self but I do not know what is in Your Self. You are the Knower of all unseen things. (Qur'an, 5:116)