Surah Al Inshiqaq Tafseer

وَأَذِنَتْ لِرَبِّهَا

And listens to and obeys its Lord,

meaning, it listens to its Lord and obeys His command to split apart. This will occur on the Day of Judgement.

وَحُقَّتْ

and it must do so.

meaning, it is right for it to obey the command of its Lord, because it is great and cannot be rejected, nor overcome. Rather it overpowers everything and everything is submissive to it.

Then Allah says,

وَإِذَا الاْإَرْضُ مُدَّتْ