He knows what is within the heavens and earth and knows what (64:4)

Almuntakhab Fi Tafsir Alquran Alkarim

He is Alimun (Omniscient) of all that is in the heavens and of all that is on earth, and He knows what you converse secretly or whisper under your breath and He knows what you utter loudly and all that is being said. And Allah is well acquainted with all that you suggest secretly to the mind and with all that the breasts store of thoughts and feelings and all that they forge

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(64:4) He knows what is in the heavens and the earth, and knows what you conceal and what you disclose. *8 Allah even knows what lies hidden in the breasts of people. *9

He knows what is within the heavens and earth and knows what meaning

*8) Another translation can be: "Whatever you da secretly and whatever openly."
*9) That is, "He is aware not only of those acts of tnan, which come to the notice of the people but He knows also those acts which remain hidden from them. Moreover, He dces not only see the superficial form of the acts, but also knows what intention and purpose underlay each act of man and with what motive and aim he did whatever he did- This is such a truth that if man ponders over it seriously, he can fully well understand that justice can be done only in the Hereafter, and only in God's Court can real justice be possibly done. Man's own intellect itself demands that man must be punished for each of his crimes. But everyone knows that in the world most of the crimes remain hidden. or the culprit escapes punishment because of insufficient evidence, or even if the crime becomes revealed, the culprit is so influential and powerful that he cannot be punished. Then the intellect of man also requires that man should not be punished only because his behaviour resembles a criminal act, but it should be ascertained that he has committed the act intentionally and deliberately and at the time he committed it, he was acting as a responsible agent, his intention in actual fact was to commit the crime, and he knew that what he was doing was a crime. That is why the worldly courts inquire into these things when they decide the cases, and regard such an inquiry as a demand of the rule of justice. Burt is there any means available in the world by which these things may be precisely ascertained beyond every shadow of doubt? Considered from this.viewpoint, this verse also bears a deep logical relevance to Allah Almighty's saying: e has created the earth and the heavens with Truth." The necessary demand of creating them with Truth is that perfect justice should prevail in this universe. Such justice can be established only when every act of a responsible man may not only remain concealed from the eyes of the one administering justice but the intention with which a person performed and act also should not remain hidden from him. And obviously, there cannot be any being, apart from the Creator of the universe, who can administer such justice, Now, if a person denies AIlah and the Hereafter, he in fact, asserts that we humans live in a universe which is devoid of justice, which is rather a place where justice cannot possibly be done. The person whose intellect, mind and conscience feel satisfied at such an assumption would be a shameless creature if be thought he was bing progressive and rationalistic and those people antiquated and retrogressive who accept a highly rational concept about the universe, which the Qur'an presents.
 

He knows what is within the heavens and earth and knows what meaning in Urdu

زمین اور آسمانوں کی ہر چیز کا اسے علم ہے جو کچھ تم چھپاتے ہو اور جو کچھ تم ظاہر کرتے ہو سب اس کو معلوم ہے، اور وہ دلوں کا حال تک جانتا ہے