The Prophet Ibrahim and the Kaaba Diaries
The Prophet (peace and blessings of Allah be on him) has taught his ummah about that which is able to guard them versus the fitnah with the Bogus messiah (al-Masih al-Dajjal). He still left his ummah on a path that is clear, and no-one deviates from it besides the 1 that's doomed. He didn't leave any good detail without pointing it out to his ummah