Based on this question, Shulchan Aruch (O"C 34:2-3) says that only people who are noted for their piety should put on Rabbeinu Tam tefillin. Why do Lubavitcher chasidim (and descendants of certain ...
I recently heard that in Belz they changed the Shin on the Tefilin Shel Rosh due to an old pair that was found that the Rebbi believed to be the true Mesorah. Is this true? How does the new Shin ...
Did Rabbi Dovid Feinstein of Uzda wear tefilin that were Ktav Ari or Ktav Beit Yosef? What about his son?
The biographical sketch of Rabbi Moshe Feinstein that appears in the beginning of Igrot Moshe volume 8 states that his father, Rabbi Dovid Feinstein of Uzda, was born and raised Hassidic, but took on ...