Re: What is the punishment of Zina?
In duniya, Zina is only punishable if Zani confesses, or there are 4 witnesses whop saw that act happening in such details as some one sees thread passing through eye of the needle.
Other than that, zani asking for allah's forgivness should be able to save him/her from the punishmenet in Akhirat.
However if person is punished in Duniya, then his/her akhirat is clean off that crime.