The Talmud discusses how the Sages would don special garments and go out to greet Shabbat as a queen or bride, and mentions the 'additional soul' (neshamah yeterah) that a person receives on Shabbat.
אָמַר רָבָא, וְאִיתֵּימָא רַבִּי יְהוֹשֻׁעַ בֶּן לֵוִי: אֲפִילּוּ יָחִיד הַמִּתְפַּלֵּל בְּעֶרֶב שַׁבָּת צָרִיךְ לוֹמַר ״וַיְכוּלּוּ״, דְּאָמַר רַב הַמְנוּנָא: כׇּל הַמִּתְפַּלֵּל בְּעֶרֶב שַׁבָּת וְאוֹמֵר ״וַיְכוּלּוּ״, מַעֲלֶה עָלָיו הַכָּתוּב כְּאִילּוּ נַעֲשָׂה שׁוּתָּף לְהַקָּדוֹשׁ בָּרוּךְ הוּא בְּמַעֲשֵׂה בְרֵאשִׁית, שֶׁנֶּאֱמַר: ״וַיְכוּלּוּ״ — אַל תִּקְרֵי ״וַיְכוּלּוּ״ אֶלָּא ״וַיְכַלּוּ״. אָמַר רַבִּי אֶלְעָזָר: מִנַּיִין שֶׁהַדִּיבּוּר כְּמַעֲשֶׂה — שֶׁנֶּאֱמַר: ״בִּדְבַר ה׳ שָׁמַיִם נַעֲשׂוּ״. אָמַר רַב חִסְדָּא אָמַר מָר עוּקְבָא: כׇּל הַמִּתְפַּלֵּל בְּעֶרֶב שַׁבָּת וְאוֹמֵר ״וַיְכוּלּוּ״, שְׁנֵי מַלְאֲכֵי הַשָּׁרֵת הַמְלַוִּין לוֹ לָאָדָם מַנִּיחִין יְדֵיהֶן עַל רֹאשׁוֹ וְאוֹמְרִים לוֹ ״וְסָר עֲוֹנֶךָ וְחַטָּאתְךָ תְּכֻפָּר״. תַּנְיָא, רַבִּי יוֹסֵי בַּר יְהוּדָה אוֹמֵר: שְׁנֵי מַלְאֲכֵי הַשָּׁרֵת מְלַוִּין לוֹ לְאָדָם בְּעֶרֶב שַׁבָּת מִבֵּית הַכְּנֶסֶת לְבֵיתוֹ, אֶחָד טוֹב וְאֶחָד רָע. וּכְשֶׁבָּא לְבֵיתוֹ וּמֹצֵא נֵר דָּלוּק וְשֻׁלְחָן עָרוּךְ וּמִטָּתוֹ מוּצַּעַת, מַלְאָךְ טוֹב אוֹמֵר: ״יְהִי רָצוֹן שֶׁתְּהֵא לְשַׁבָּת אַחֶרֶת כָּךְ״, וּמַלְאָךְ רַע עוֹנֶה ״אָמֵן״ בְּעַל כׇּרְחוֹ. וְאִם לָאו, מַלְאָךְ רַע אוֹמֵר: ״יְהִי רָצוֹן שֶׁתְּהֵא לְשַׁבָּת אַחֶרֶת כָּךְ״, וּמַלְאָךְ טוֹב עוֹנֶה ״אָמֵן״ בְּעַל כׇּרְחוֹ.
Rava said, and some say it was Rabbi Yehoshua ben Levi who said: Even an individual who prays on Shabbat evening must recite the passage: “And the heavens and the earth were finished [vaykhullu]” (Genesis 2:1–3), as Rav Hamnuna said: Anyone who prays on Shabbat evening and recites the passage of vaykhullu, the verse ascribed him credit as if he became a partner with the Holy One, Blessed be He, in the act of Creation. As it is stated: “And the heavens and the earth were finished [vaykhullu].” Do not read it as: Were finished [vaykhullu]; rather, as: They finished [vaykhallu]. It is considered as though the Holy One, Blessed be He, and the individual who says this become partners and completed the work together. Rabbi Elazar said: From where is it derived that speech is like action? As it is stated: “By the word of God the heavens were made, and all of their hosts by the breath of His mouth” (Psalms 33:6). Rav Ḥisda said that Mar Ukva said: One who prays on Shabbat evening and recites vaykhullu, the two ministering angels who accompany the person at all times place their hands on his head and say to him: “And your iniquity has passed, and your sin has been atoned” (Isaiah 6:7). It was taught in a baraita: Rabbi Yosei bar Yehuda says: Two ministering angels accompany a person on Shabbat evening from the synagogue to his home, one good angel and one evil angel. And when he reaches his home and finds a lamp burning and a table set and his bed made, the good angel says: May it be Your will that it shall be like this for another Shabbat. And the evil angel answers against his will: Amen. And if the person’s home is not prepared for Shabbat in that manner, the evil angel says: May it be Your will that it shall be so for another Shabbat, and the good angel answers against his will: Amen.