The Shulchan Aruch · Orach Chayim
אורח חיים ש׳Orach Chayim 300
Siman 300 of 697 in Orach Chayim — 1 se'if
הלכות שבתLaws of Shabbat· siman 300
Se’if 1א׳
לְעוֹלָם יְסַדֵּר אָדָם שֻׁלְחָנוֹ בְּמוֹצָאֵי שַׁבָּת כְּדֵי לְלַוּוֹת אֶת הַשַּׁבָּת, אֲפִלּוּ אֵינוֹ צָרִיךְ אֶלָּא לְכַזַּיִת.
1. A person must always arrange his table Saturday night (see Shabbos 119b) in order to escort the Shabbat (out), even though he will only partake of an olive-sized portion.
Shulchan Aruch, Orach Chayim — Torat Emet 363 edition, via Sefaria — public domain
English: Sefaria Community Translation — CC0