These pages address the laws and structure of Shema recitation and the relationship between the paragraphs. They are useful for understanding the separate placement and liturgical treatment of the first two paragraphs.
אָמַר רַבִּי יְהוֹשֻׁעַ בֶּן קׇרְחָה: לָמָּה קָדְמָה פָּרָשַׁת ״שְׁמַע״ וְכוּ׳. תַּנְיָא רַבִּי שִׁמְעוֹן בֶּן יוֹחַי אוֹמֵר: בַּדִּין הוּא שֶׁיַּקְדִּים ״שְׁמַע״, לִ״וְהָיָה אִם שָׁמוֹעַ״ — שֶׁזֶּה לִלְמוֹד, וְזֶה לְלַמֵּד. ״וְהָיָה אִם שָׁמוֹעַ״ לְ״וַיֹּאמֶר״ — שֶׁזֶּה לִלְמוֹד, וְזֶה לַעֲשׂוֹת. אֶלָּא הָכִי קָאָמַר: בַּדִּין הוּא שֶׁתִּקְדַּם ״שְׁמַע״ לִ״וְהָיָה אִם שָׁמוֹעַ״, שֶׁזֶּה לִלְמוֹד וּלְלַמֵּד וְלַעֲשׂוֹת. ״וְהָיָה אִם שָׁמוֹעַ״ לְ״וַיֹּאמֶר״, שֶׁזֶּה יֵשׁ בָּהּ לְלַמֵּד וְלַעֲשׂוֹת, ״וַיֹּאמֶר״ אֵין בָּהּ אֶלָּא לַעֲשׂוֹת בִּלְבַד.
We learned in the mishna: Rabbi Yehoshua ben Korḥa said: Why did the portion of Shema precede that of VeHaya im Shamoa? So that one will first accept upon himself the yoke of the kingdom of Heaven and only then accept upon himself the yoke of the mitzvot. It was taught in a baraita that Rabbi Shimon ben Yoḥai offers a different explanation for the order of the portions of Shema. He says: By right, Shema should precede VeHaya im Shamoa because the Shema includes the directive to learn, while VeHaya im Shamoa includes the directive to teach. Similarly, VeHaya im Shamoa should precede VaYomer, the final paragraph of Shema, because VeHaya im Shamoa includes the directive to teach, while the portion of ritual fringes includes the directive to perform. Rather, Rabbi Shimon ben Yoḥai said as follows: By right, the portion of Shema should precede VeHaya im Shamoa because the portion of Shema includes the directives to learn, to teach, and to perform, while VeHaya im Shamoa includes the directives to teach and to perform. VeHaya im Shamoa should precede VaYomer because VeHaya im Shamoa includes the directives to teach and to perform, while VaYomer only includes the directive to perform.