פֵּֽרְשָׂ֨ה צִיּ֜וֹן בְּיָדֶ֗יהָ אֵ֤ין מְנַחֵם֙ לָ֔הּ צִוָּ֧ה יְהוָ֛ה לְיַעֲקֹ֖ב סְבִיבָ֣יו צָרָ֑יו הָיְתָ֧ה יְרוּשָׁלִַ֛ם לְנִדָּ֖ה בֵּינֵיהֶֽם׃ (ס)
צִיוֹן צעשפּרײט אירע הענט, זי האָט ניט קײן טרײסטער; גאָט האָט באַפֿױלן אַקעגן יעקבֿ רונד אַרום אים זײַנע פֿײַנט; ירושָלַיִם איז געװאָרן פֿאַר אַן אומרײנער צװישן זײ.
Shulchan Arukh, Orach Chayim
The one breaking the bread gives a slice to each person, and each person takes the slice in their hand. The one breaking the bread does not give it directly into the hand of the eater, unless it is during a period of mourning. (Beit Yosef and Abudraham in the name of the Rambam, chapter 7 of Hilchot Berachot, and Responsa Rashba). (The reference to "and she shall stretch forth her hand" indicates a symbolic gesture during mourning, where the slice of bread is handed in a specific manner during times of grief.)