יֵשְׁב֨וּ לָאָ֤רֶץ יִדְּמוּ֙ זִקְנֵ֣י בַת־צִיּ֔וֹן הֶֽעֱל֤וּ עָפָר֙ עַל־רֹאשָׁ֔ם חָגְר֖וּ שַׂקִּ֑ים הוֹרִ֤ידוּ לָאָ֙רֶץ֙ רֹאשָׁ֔ן בְּתוּלֹ֖ת יְרוּשָׁלִָֽם׃ (ס)
They sit upon the ground, and keep silence, The elders of the daughter of Zion; They have cast up dust upon their heads, They have girded themselves with sackcloth; The virgins of Jerusalem hang down Their heads to the ground.
Read halakhic rulings (Jewish law) on Lamentations 2:10: and classical halakhic sources.