Editing Mivtza Tefillin (section)

== The Questions ==
A lengthy correspondence took place between the Rebbe and Rav Yitzchak Hutner. Rav Hutner raised the question to the Rebbe that in order to fulfill a mitzvah, one needs to know the kavana of the mitzvah based on the known principle that mitzvos require kavana. Without knowledge about the nature of the batim of the tefillin, a person won't fulfill the mitzvah by putting them on and is called a "misasek" - like someone who has no intention and isn't fulfilling the mitzvah, similar to someone who ate matzah on Seder night thinking it was meat, who hasn't fulfilled their obligation.

Additional questions raised:

* What benefit is there in putting on tefillin just once
* There is concern that the person putting on tefillin might have improper thoughts during the wearing which are forbidden. Additionally, one's body must be clean.