And it is not for any human being that Allah should speak (42:51)

Almuntakhab Fi Tafsir Alquran Alkarim

No human would qualify to be spoken to directly by Allah without the intervention of a medium, nor is it befitting; but only by inspiration or vision, or from behind a veil or through a spirit who would actuate him with what Allah has ordained and with what He will; He is indeed ?Aliyun (Supreme) above all and beyond all and He is Hakimun (the Source of wisdom and wise mysterious dispensations)

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

(42:51) It *78 is not given to any human being that Allah should speak to him except through revelation, *79 or from behind a veil, *80 or that a messenger (an angel) be sent to him who reveals to him by Allah's leave whatever He wishes. *81 He is All-High, Most Wise. *82

And it is not for any human being that Allah should speak meaning

*78) In conclusion, the same theme with which the discourse began has been reiterated. To understand it fully, please see the first verse of this Surah and the E.N. on it.
*79) Here, wahi means to inspire somebody with something, or to show something to somebody in a vision as were the Prophets Abraham and Joseph shown, (Yusuf: 4, 100; As-Saaffat: 102).
*80) That is, "One may hear a voice without seeing the speaker, just as it happened in the case of the Prophet Moses when he suddenly began to hear a voice from a tree on Mount Tur, while the Speaker was hidden from him." (Ta Ha: 11-48, An-Naml: 8-12, Al-Qasas: 30 35).
*81) This is the form of wahi by which all Divine Scriptures have actually reached the Prophets of Allah. Some people have misinterpreted this sentence and given it this meaning Allah sends a messenger who by His Command conveys His message to the common people." But the words of the Qur'an fa-yuhiya biidhni-hi ma yasha'u (then He reveals by His Command whatever He wills) show that this interpretation is absolutely wrong. The Prophets' preaching before the common people has neither been called wahi anywhere in the Qur'an, nor is there any room in Arabic for describing a man's speaking to another man openly by the word wahi'. Lexically, wahi means secret and swift instruction. Only an ignorant person will apply this word to the common preaching by the Prophets.
 

And it is not for any human being that Allah should speak meaning in Urdu

کسی بشر کا یہ مقام نہیں ہے کہ اللہ اُس سے روبرو بات کرے اُس کی بات یا تو وحی (اشارے) کے طور پر ہوتی ہے، یا پردے کے پیچھے سے، یا پھر وہ کوئی پیغام بر (فرشتہ) بھیجتا ہے اور وہ اُس کے حکم سے جو کچھ وہ چاہتا ہے، وحی کرتا ہے، وہ برتر اور حکیم ہے