The Rebbe blesses success for the new Moroccan students and emphasizes that the scribes are full Talmidei Tomchei Tmimim, learning Nigleh, Chassidus, and davening alongside their sacred craft. Those chosen for this holy work—writing tefillin and mezuzos—bring great merit to the many.
https://www.torahrecordings.com/rebbe/igroskodesh/016/002/5832