כַּיָּמִ֗ים אֲשֶׁר־נָ֨חוּ בָהֶ֤ם הַיְּהוּדִים֙ מֵא֣וֹיְבֵיהֶ֔ם וְהַחֹ֗דֶשׁ אֲשֶׁר֩ נֶהְפַּ֨ךְ לָהֶ֤ם מִיָּגוֹן֙ לְשִׂמְחָ֔ה וּמֵאֵ֖בֶל לְי֣וֹם ט֑וֹב לַעֲשׂ֣וֹת אוֹתָ֗ם יְמֵי֙ מִשְׁתֶּ֣ה וְשִׂמְחָ֔ה וּמִשְׁל֤וֹחַ מָנוֹת֙ אִ֣ישׁ לְרֵעֵ֔הוּ וּמַתָּנ֖וֹת לָֽאֶבְיוֹנִֽים׃
אַזױ װי די טעג װאָס די ייִדן זײַנען לױז געװאָרן פֿון זײערע פײַנט, און דעם חוֹדש װאָס איז זײ פֿאַרקערט געװאָרן פֿון קומער אין אַ שׂמכה, און פֿון טרױער אין אַ יָום-טוב; זײ צו מאַכן פֿאַר טעג פֿון אַ סעודה און אַ שׂמכה, מיט שַלַח-מָנות פֿון אײנעם צום אַנדערן, און מתּנות צו אָרימע לײַט.
Mishnah Megillah
What is considered a large town? One which has in it ten idle men. One that has fewer is considered a village. In respect of these they said that they should be moved up but not postponed. But with regard to the bringing the wood for the priests, the [fast of] Tisha B’Av, the hagigah, and assembling the people they postpone [until after Shabbat] and they do not move them up. Although they said that they should be moved up but not postponed, it is permissible to mourn, to fast, and to distribute gifts to the poor [on these earlier days]. Rabbi Judah said: When is this so? In a place where people gather on Mondays and Thursdays, but in places where people do not gather on Mondays and Thursdays, the Megillah is read only on its proper day.