שמות פרק יג ט וְהָּיָּה לְךָ לְאוֹת עַל-יָּדְךָ וּלְזִכָּרוֹן בֵין עֵינֶׂיךָ לְמַעַן תִהְיֶׂה תוֹרַת הי בְפִיךָ
אין לך גדולה במצוות שבתורה כמצוות תפילין שהוקש לכל התורה שנאמר "למען תהיה תורת ה' בפיך" (מדרש)
Shabbos 130: (Beraisa - R. Shimon ben Elazar): Every Mitzvah that Yisraelim were willing to die for when kingdoms decreed against it, like idolatry and Milah, they still solidly observe it; every Mitzvah that they were not willing to die for at the time of decrees, like Tefillin, their observance of that Mitzvah is weak.
(R. Yanai): One must [be able to] guard his body to wear Tefillin, like Elisha 'of the wings'. (Rashi - most people are unlike Elisha, and cannot wear Tefillin - this is because only he was willing to die for it, as follows; Rashba - we bring R. Yanai's teaching only to show that most of Yisrael were not willing to die for it (Tosfos - even Elisha did not admit that he was wearing Tefillin) - it was known that most people do not wear Tefillin (perhaps this means, all day long).
Question: What does this mean?
Answer #1 (Abaye): He must be able to guard himself from passing gas [while wearing Tefillin].
Version #1 (Rashi) Answer #2 (Rava): He need [only] be able to guard himself from sleeping [while wearing Tefillin, lest he pass gas - when awake, anyone can guard himself.
Version #2 (Tosfos) Answer #2 (Rava): He must [also] be able to guard himself from sleeping (one must be conscious of them the entire time he wears them; also, lest he pass gas.
Question: Why is he called Elisha 'of the wings'?
Answer: Rome decreed to puncture the skull of anyone who will wear Tefillin; Elisha wore Tefillin in the market. An officer appointed to enforce the decree saw him and chased him; when he caught him, Elisha took the Tefillin from his head and put it in his hand. The officer asked what he is holding; Elisha said that it is dove's wings - a miracle was done, he opened his hand and revealed dove's wings. (Maharsha - the name also alludes to [a body clean like] angels, which have wings.)
Question: Why did he say dove's wings, and not those of other birds? (Maharsha - he did not need to specify any species!)
Answer: Keneses Yisrael is compared to a dove - "Kanfei Yonah Nechpah va'Kesef"; Just like a dove's wings protect it [from cold, and it uses them to fight off attackers], Yisrael's Mitzvos protect them.
Three main (and perhaps contradictory) principles regarding wearing Tefillin (O.C. simanim 25-37):
- Concept to wear Tefillin the entire day
- From the Torah the mitzvah of wearing Tefillin is the entire day, except for those times a person should not wear Tefillin.
- From the Torah the mitzvah is to wear Tefillin for a brief time (perhaps time to say Krias Shema); the optimal mitzvah from the Torah is to wear Tefillin the entire day.
- From the Torah the mitzvah is to wear Tefillin for a brief time; Chaza”l decreed to wear Tefillin the entire day.
Requires a constant clean body (גוף נקי)
- Abaye and Rava (above) are explaining R. Yanai that one needs to refrain from passing gas and/or sleeping while wearing Tefillin (law decided according to Rava).
- Others explain separate concept to keep one’s body from aveiros; one should wear Tefillin after doing Teshuvah.
- Some of the Geonim explain R. Yanai’s law of a “clean body” is limited to the time of Shmad (forced conversation). Only Tzadikim, like Elisha for whom a miracle will occur, are able to wear Tefillin during the time of Shmad. Everyone else should not wear Tefillin during that period.
Requires constant awareness of the mitzvah (היסח הדעת)
- A person is obligated to touch one’s Tefillin constantly when wearing them. The Tzitz of the Cohen Gadol has one Name of G-d and the Cohen Gadol must constantly be aware of it, how much more so regarding Tefillin which contain multiple Names of G-d.
- Some Rishonim maintain that one must not be jovial or light-headed (but not necessary to have constant awareness).
Four possible methods that are mentioned in the Rishonim to practically fulfill Mitzvas Tefillin:
- Most people would refrain from putting on Tefillin (except for certain special people). This method is rejected by Halacha.
- Most people would put on Tefillin for a short period every day and then remove them.
- Most people should put on Tefillin for the entire day.
- Most people would put on Tefillin during the time of prayers (accepted Halacha).