in the science of immortality only after death (they believe there is an eternal life after death, -I do not know whether Buddhism also has belief in life after death?)
so that eternity for those who get "husnul Khatimah" (victory at death) or even "su ul khatimah" (badness at death)
for the husnul khataimah will be eternal in His heaven, and for the su ul khatimah will also be eternal in hell ,,
so they get closer to the creator wholeheartedly to get husnul khatimah.