Commentary for Esther 2:16

וַתִּלָּקַ֨ח אֶסְתֵּ֜ר אֶל־הַמֶּ֤לֶךְ אֲחַשְׁוֵרוֹשׁ֙ אֶל־בֵּ֣ית מַלְכוּת֔וֹ בַּחֹ֥דֶשׁ הָעֲשִׂירִ֖י הוּא־חֹ֣דֶשׁ טֵבֵ֑ת בִּשְׁנַת־שֶׁ֖בַע לְמַלְכוּתֽוֹ׃

So Esther was taken unto king Ahasuerus into his house royal in the tenth month, which is the month Tebeth, in the seventh year of his reign.

Rashi on Esther