The Rambam in his Hakdama to his Pirush on Perek Chelek in Mesechtas Sanhedrin mentions the points of belief a Jew must have. To the best of my knowledge these are the basis of the well-known ...
The Rambam lists waiting for Moshiach as one of the 13 principles of faith. We have a tradition that there will be two Moshiachs, Ben Yosef and Ben David, which one was the Rambam referring to?
Rambam, in his Commentary to the Mishna (Sanhedrin 10), enumerates 13 "עיקרים" or "יסודות", which he holds are the core "principles" that every Jew is expected to believe. (Summary in English.) But ...