Life After Death: The Book of Answers
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Campbell, "Plato's Theory of Reincarnation: Eschatology and Natural Philosophy," Review of Metaphysics 75 (4): 643–665.
In contrast, those in Jahannam will dwell in a land infested with thousands of serpents and scorpions;  be "burnt" by "scorching fire" [ 88:1-7] and when "their skins are roasted through, We shall change them for fresh skins" to repeat the process forever [ 4:56]; they will have nothing to drink but "boiling water and running sores" [ 78:21–30];  their cries of remorse and pleading for forgiveness will be in vain [ 26:96–106].
The second realm, where most souls move directly, is thought of as an intermediate transition between the lower planes of life and hell and the higher perfect realms of the universe.
Ancestor worship, and links to one's ancestors, was once an important component of early Buddhism, but became less relevant already before the formation of the different Buddhist streams. Tartarus was for the people that blasphemed against the gods or were rebellious and consciously evil.
Prior to that, theologians of the Kharijite and Mu'tazilite schools insisted that the "sinful" and "unrepentant" should be punished even if they were believers, but this position has been "lastingly defeated and erased" by mainstream Islam. His report of life there covers a wide range of topics, such as marriage in heaven (where all angels are married), children in heaven (where they are raised by angel parents), time and space in heaven (there are none), the after-death awakening process in the World of Spirits (a place halfway between Heaven and Hell and where people first wake up after death), the allowance of a free will choice between Heaven or Hell (as opposed to being sent to either one by God), the eternity of Hell (one could leave but would never want to), and that all angels or devils were once people on earth.