My mother says she's Jewish and I am also, but I'm still worried that maybe I am not and she is not and her mother is not and just they don't know but believe to be.
Is there anywhere that the Rambam says that a non-Jew is not allowed to put on tefilin?
I say tefilin because it's the rebbe's campaign to put on tefilin and that should be a foundation starting stone, and one of the main things I should work on, but inside I'm worried what if I really am not Jewish and I'm violating halacha by putting on tefillin? Does the Rambam say this anywhere? I'm looking for exact wording if possible.