Menachot 34b
מנחות ל״ד ב — ד"ה תָּנוּ רַבָּנַן
Menachot 34b:9-11
The sugya records the dispute between Rashi and Rabbeinu Tam concerning the order of the four Torah passages in the tefillin, establishing the textual and halakhic basis for the two arrangements.
תָּנוּ רַבָּנַן: כֵּיצַד סִדְרָן? ״קַדֶּשׁ לִי״ ״וְהָיָה כִּי יְבִיאֲךָ״ מִיָּמִין, ״שְׁמַע״ ״וְהָיָה אִם שָׁמוֹעַ״ מִשְּׂמֹאל. וְהָתַנְיָא אִיפְּכָא? אָמַר אַבָּיֵי: לָא קַשְׁיָא, כָּאן מִימִינוֹ שֶׁל קוֹרֵא, כָּאן מִימִינוֹ שֶׁל מַנִּיחַ, וְהַקּוֹרֵא קוֹרֵא כְּסִדְרָן. אָמַר רַב חֲנַנְאֵל אָמַר רַב: הֶחְלִיף פָּרָשִׁיּוֹתֶיהָ פְּסוּלוֹת. אָמַר אַבָּיֵי: לָא אֲמַרַן
§ The Sages taught in a baraita: How does one arrange the four passages inside the phylacteries? The passage of: “Sanctify unto Me” (Exodus 13:1–10), and the passage of: “And it shall be when He shall bring you” (Exodus 13:11–16), are placed on the right; the passage of: “Listen, O Israel” (Deuteronomy 6:4–9), and the passage of: “And it shall come to pass, if you shall hearken diligently” (Deuteronomy 11:13–21), are placed on the left. The Gemara asks: But isn’t it taught in a baraita that one places them in the opposite manner, with the first two passages on the left and the latter two on the right? Abaye said that it is not difficult: Here it means to the right of the reader, i.e., one who is standing opposite the one donning the phylacteries, whereas there it means to the right of the one who is donning the phylacteries. And in this manner the reader reads the passages in their order, as they appear in the Torah, starting with Exodus 13:1–10 to his right. Rav Ḥananel says that Rav says: If one exchanged its passages, i.e., placed them in a different order within the compartment, the phylacteries are unfit. Abaye said: We did not say this
