How death is erased in the afterlife?

I want to ask a question out of curiosity, it's a matter of the afterlife. In a hadith that I once read, that the Prophet said "death will be brought in the form of a black and white sheep, then the death will be slaughtered between heaven and hell." Well, my question. If death itself no longer exists, do all of Allah's creatures become immortal? Or only the inhabitants of heaven and hell? Sorry if my question is a bit confusing.