Raphaelwilmowsky
Created page with "Rabbeinu Tam's tefillin represents his approach to the mitzvah of tefillin, which was not established as a halachic requirement. Those who are mehadrin lay Rabbeinu Tam's tefillin in addition to the standard tefillin, which follow Rashi's approach. Chabad chassidim universally practice laying these tefillin as well. Since 1976, when the Rebbe encouraged the laying of Rabbeinu Tam's tefillin, they began laying Rabbeinu Tam's tefillin along with starting to lay Rashi's tef..."