If you want to find an answer based on the rationalization you can receive and if there is any source or reference specifically addressing the issue. I try to search on the internet maybe a lot of writing that can answer that problem. It turns out that there is not much writing to discuss the matter and the answer can not be satisfactory. Until now I still have not found the answer to the question "Does Prophet Adam have a Naval?" Which is satisfactory. If only someone had helped me answer that question of course I would be grateful for the addition of new knowledge that I have not understood