Parashas Eikev · Passuk 11:19
and teach them to your children—reciting them when you stay at home and when you are away, when you lie down and when you get up;
Torah Temimah points to Yerushalmi ברכות.
TT lemma: את בניכם (unit 8 of 10).
English: Women are exempt from Shema and from tefillin, for it is written “you shall teach them to your sons” — and not your daughters. Whoever is obligated in Torah study is obligated in tefillin; women, who are not obligated in Torah study in this framework, are not obligated in tefillin.
Derash on the verse (Yerushalmi sugya) — not a formal named middah of the 13
Amoraic discussion in the Yerushalmi built on this passuk.
Exemption from tefillin and Shema is derived through the chain that begins with “your sons” and talmud Torah.