How does one tell the difference between Rash"i and Rabbeinu Tam tefillin shel yad from their exteriors?
This question explains that the extra hair emanating from the tefillin shel rosh of Rabbeinu Tam tefillin is a way to identify the shel rosh of Rabbeinu Tam tefillin vs. Rash'i tefillin. If 2 ...
I was told there is a stance of Rabbeinu Tam's on the length of the michnasayim (pants of the kohanim in the Temple)? Can someone point to the source for this stance? Some more detail: I was told ...