How Are Tefillin Retzuos Made?
Based on article from Rabbi Kaganoff
In this week’s parsha, Avrohom tells the King of Sodom that he (Avrohom) will not keep "even a thread or even a shoelace" from the booty of Sodom, although all of Sodom and its populace are rightfully his property as spoils of war. The Gemara teaches that as a reward for this, Avrohom’s descendants were given two mitzvos, the techeiles thread of tzitzis and the strap of the tefillin. As I have written several articles on the topic of techeiles in the past, this article will discuss the halachos of tefillin straps, and what one should ask about when purchasing them.
Although a good quality pair of tefillin should last a lifetime, the straps on the tefillin do wear out and need replacement periodically.
Of what are Tefillin made?
All parts of tefillin and all other devarim she’bi’kedusha (holy items) must come from kosher species, although not necessarily from an animal that was slaughtered in a kosher way (Shabbos 108a; Shulchan Aruch, Orach Chayim 32:12). The different parts of tefillin come from dissimilar parts of the hide of the animal, the variation being the thickness of the hide and how it is processed.
Tefillin have three major components:
- The Parshiyos (singular, parsha). These are the parchments, which are the processed skin on which the sofer carefully writes the four sections of the Torah that are inserted into Tefillin. For the tefillin shel yad (arm tefillin), all four parshiyos are written on one piece of parchment, whereas for the tefillin shel rosh (head tefillin), each parsha is written on a separate piece of parchment.
- The Batim (singular, bayis). These are the housing of the parshiyos and are made from thick hide. The bayis itself has three subcomponents. (a) The Ketzitzah, the cube-shaped box inside which the parshiyos are placed. (Note that it is perfectly kosher and sometimes preferred for the height of the ketzitzah to be greater than its other two dimensions; however, most pairs of tefillin are made with a cubic ketzitzah. I have written another article in which I explained this issue more thoroughly.) (b) The Titura, the square base on which the ketzitzah rests. (c) The Ma’avarta (Aramaic for “bridge”), the extension of the titura through which the straps are inserted. In good quality tefillin, the entire bayis, that is the ketzitzah, titura, and ma’avarta, are all made from one piece of hide.
- The Retzuos (singular, retzua), the straps, which are made from softer leather than that used for the batim.
