For the Bahai people they are authentic since they agree on its teaching. Please give me the full chain-of-narration(sanaat) so i can check out each narrator to see if its authentic or not.
They will return on earth but only for judgement day/resurrection day there is no indication in the Authentic hadiths or the Quran that says what you just said. Only if you are willing to be dishonest and twist verses or commentaries.
The hadith says no clay that means there where no humans/physical beings also it would be a direct contradiction on Adam(p) being the first human-being. Its hes Nouhr (soul) he was already made a prophet in the knowledge of god.
They were from the same faith as there ancestors(Jewish), those people also uphold the customs of there ancestors and boasted about there history.
Mohammed(saws) was poisoned (tried to be killed) by a Jewish woman and was persecuted by the Jews and Pagans. Jesus(p) was tried to be killed and persecuted by the Jews and Romans.
Jeremiah was thrown into a pit for preaching against the depraved way in which the Israelites were living.
Elijah was being hunted down by Queen Jezebel and had to hide out in the desert. I'm sure other prophets were persecuted because their messages were rarely welcome, but these two are off the top of my head.
Edit: Forgot to put two names who were killed: Zakariya(p) and Yahya(p)
Since you belief also in the bible lets quote some verses:
Acts 7:52
Was there ever a prophet your fathers did not persecute? They even killed those who predicted the coming of the Righteous One. And now you have betrayed and murdered him--
Matthew 23:37
O Jerusalem, Jerusalem, you who kill the prophets and stone those sent to you, how often I have longed to gather your children together, as a hen gathers her chicks under her wings, but you were not willing.
1 Thessaolonians 2:15
who killed the Lord Jesus and the prophets and also drove us out. They displease God and are hostile to all men
Matthew 5:10-12
"Blessed are they who are persecuted for righteousness' sake: for theirs is the kingdom of heaven. Blessed are ye when men shall revile you and persecute you, and say all manner of evil against you falsely, for my sake. Rejoice, and be exceeding glad; for great is your reward in heaven: for so persecuted they the prophets which were before you."
Luke 6:22-23
"Blessed are ye when men shall hate you, and when they shall separate you from their company, and shall reproach you, and cast out your name as evil, for the Son of man's sake. Rejoice ye in that day, and leap for joy: for behold, your reward is great in heaven: for in like manner did their fathers unto the prophets.''
If you knew any science you would come to the conclusion that humans did not live million
s years ago but probably between 50,000 and 100,000 years. If we would include the evolution something around: 160,000-250,000 as a maximum. (This is uphold by the evolutionist) not religious people. I would agree personally that humans lived much and much longer maybe even in the Millions years ago but its just a assumption and not based on science.
I don't see any questions i only see claims.