Tafsir of Al-Fajr 89:26

And none will bind as He will bind. meaning, there is no one who is more severely punished and bound than those the Az-Zabaniyah punish the disbelievers in their Lord. This is for the criminals and the wrongdoers among the creatures. In reference to the pure and tranquil soul -- which is always at rest and abiding by the truth it will be said to it,

يا أيتها النفس المطمينة