In addition to Paradise and Hell, six things will not perish:
The Throne (ʿArsh)
The Footstool (Kursī)
ʿAjb al-dhanab — the final part of the backbone.
Souls (arwāḥ)
The Tablet (lawḥ)
The Pen (qalam)
With Paradise and Hell, these form eight things. Their continuance is a gift from Allah; it does not make them uncreated or intrinsically eternal like the Creator.