Tafsir al-Jalalayn — an-Naba 78:29

and everything in the way of deeds have We kept count of have We recorded precisely in a Book as individual written records in the Preserved Tablet in order to requite creatures in accordance with them including the record of their denial of the Qur’ān.

Tafsir al-Jalalayn — an-Naba 78:30

‘So now taste! — in other words it will be said to them in the Hereafter when the chastisement has befallen them taste now your requital! For We will increase you in nothing but chastisement’ in addition to your due chastisement.

Tafsir al-Jalalayn — an-Naba 78:20

and the mountains are set in motion dislocated from their positions and become as a mirage as fine dust that is to say like it in terms of its levity when in motion.

Tafsir al-Jalalayn — an-Naba 78:23

to remain lābithīna is an implied circumstantial qualifier in other words their remaining therein will be decreed to be therein for ages for endless epochs ahqāb is the plural of huqb

Tafsir al-Jalalayn — an-Naba 78:24

tasting in it neither coolness neither sleep something which they will not taste therein nor drink nor anything that is imbibed for the sake of its delightful taste