And the Horn will be blown, and whoever is in the heavens (39:68)

Almuntakhab Fi Tafsir Alquran Alkarim

The trumpet will be blown and sounded emitting so violent penetrating, shocking and thunderous blast proclaiming the Final Event so as to overwhelm all those in the heavens and on earth who shall be stunned into unconsciousness save those whom Allah excepts as He will. Next will follow a Second blast and there, they are all up upon their feet looking around

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

(39:68) And the Trumpet shall be blown *78 and all who are in the heavens and the earth shall fall down dead save those whom Allah wills. Then the Trumpet shall be blown again, and lo! all of them will be standing and looking on. *79

And the Horn will be blown, and whoever is in the heavens meaning

*78) For the explanation of Sur (Trumpet), see AI-An`am: 73, Ibrahim: 48, AI-Kahf: 99, Ta Ha: 102-103, Al-Hajj: 1, AI-Mu'minun: 101. An-Naml: 87 and the E,N.'s thereof.
*79) Here, mention has been made of the Turmpet's being blown only twice. Besides, in Surah An-Naml there is the mention of another blowing of the Trumpet before these two, on hearing which everything in the earth and the heavens will be struck with terror (v. 87). On this very basis, the Ahadith mention that the Trumpet will be blown thrice: (1) Nafakhat al-Faza`on hearing which everything will be struck with terror, (2) nafakhat as-Sa `q, on which everyone will fall down dead, and (3) nafakhat al-qiyam li-Rabbit- alamin, i.e. the Trumpet on the blowing of which all dead men will return to life and arise from their graves to present themselves before their Lord.
 

And the Horn will be blown, and whoever is in the heavens meaning in Urdu

اور اُس روز صور پھونکا جائے گا اور وہ سب مر کر گر جائیں گے جو آسمانوں اور زمین میں ہیں سوائے اُن کے جنہیں اللہ زندہ رکھنا چاہے پھر ایک دوسرا صور پھونکا جائے گا اور یکایک سب کے سب اٹھ کر دیکھنے لگیں گے