Les Psaumes 139:10 Midrash : Mekhilta DeRabbi Shimon Ben Yochai

גַּם־שָׁ֭ם יָדְךָ֣ תַנְחֵ֑נִי וְֽתֹאחֲזֵ֥נִי יְמִינֶֽךָ׃

là aussi ta main me guiderait, et ta droite se saisirait de moi.

Mekhilta DeRabbi Shimon Ben Yochai

"That the Torah of the Lord be in thy mouth" -- to exclude women [from tefillin]. What is exemplary about tefillin? They are a positive time-triggered commandment from which women are exempt. So too, are women exempt from all positive time-triggered commandments.