Is there a planet other than the planet Earth where people exist, or any other kind to whom Prophets and Messengers and Muhammad sawas. and Imams a.s were sent?
The Messenger, between the hands of the Divine torment, is a Divine mercy. So how can this Mercy be distinguished? How the Messenger can be known among many false calls? How the truth can be known?!
How did the Muslims distinguish Muhammad sawas and followed him without Musaylimah or Sajjaj or Al-Aswad Al-Ansi and other Christian scholars, or Jewish scholars or Hanafi scholars?