Wrong Tefillin
Question: My friend allowed me to borrow his tefillin, but I accidentally put on Rabbeinu Tam Tefillin, only realising after davening . Do I need to repeat the berachos when I put on Rashi Tefillin? Answer: There is a machlokes among the rishonim regarding the order of the parshiyos in tefillin . According to Rashi (Menachos 34b), the parshiyos are placed in the order they appear in the Torah; thus, ‘Shema’ comes before ‘Vehaya im Shamoa’. Tosafos, however, writes that ‘Shema’ appears last. The Shulchan Aruch (Orach Chaim 34:2) rules that pious individuals should wear both pairs of tefillin , ensuring that they are fulfilling the mitzva properly according to both opinions. He adds (OC 34:3) that only those recognised for piety should do so. The Mishna Berura (34:17) explains that for others, wearing both is considered a sign of haughtiness, as the accepted practice is to wear only Rashi tefillin . This is why most ashkenazim do not wear Rabbeinu Tam tefillin . The Ben Is...