And when Allah intended...
And when Allah intended, the Prophet was informed through the process of revelation that the hypocrites are none but liars and the chastity of 'Aisha Siddiqah {May Allah have mercy on her} was verily beyond reproach. A Muslim monotheist must have a conviction that Allah preserves the keys to the treasures of the unknown with none but Himself and has appointed none as their treasurer.
No one can stop Him if He Himself awards something to whomsoever He so wishes (by Himself unlocking one of His treasures). The one who claims to have the knowledge of Ghaib (unseen), is a liar: We thus understand that anyone who claims to possess a certain art or knowledge enabling him to have a peep into the Ghaib, to reveal the past incidents and to adumbrate about the futuristic events, is an outright liar claiming godship.
In case someone recognizes a Prophet, a saint, a jinn, an angel, an Imam, a man of piety, a religious preceptor, a martyr, an astrologer, a seer, a clairvoyant, a prestidigitator, a pundit, a ghost, or a fairy to be as such (having the knowledge of the unknown), such a person becomes a Mushrik, and he (rejects and negates) denies the contents of the above verses.
Even if a certain prediction of an astronomer, by a sheer chance, happens to come true, it does not prove his knowledge of the unknown because most of their statements turn out to be incorrect. Hence we understand that it is beyond their capacity to have a knowledge of the Ghaib. A conjectural utterance may at times prove to be correct and at times incorrect.
The same is also true in regard to making Prophecies, getting the things known through a Divine Inspiration, or resorting the Qur'anic verses to gain an insight into the future events. A revelation, however, is never incorrect and is not under their control. Allah reveals whatever He intends to, out of His Own Free Will. A revelation does not depend on the desire of anyone.
Allah the Exalted says: {Say: 'None in the heavens and the earth knows the Ghaib (unseen) except Allah, nor can they perceive when they shall be resurrected.}(V.27:65) It means that no one has the capability to have an access to the knowledge of the Ghaib whether he is one of the most prestigious human beings or one of the most high-ranking angels.
This fact may be corroborated by the evidence that the whole world knows about the advent of the Doomsday, but none of them knows as to when shall it occur!