The Prophet Ibrahim and the Kaaba Diaries
The Prophet (peace and blessings of Allah be on him) has taught his ummah about that that can secure them versus the fitnah of the Bogus messiah (al-Masih al-Dajjal). He still left his ummah with a path that is obvious, and no one deviates from it other than the a single who is doomed. He didn't leave any superior issue without pointing it out to h