בַּלַּ֣יְלָה הַה֔וּא נָדְדָ֖ה שְׁנַ֣ת הַמֶּ֑לֶךְ וַיֹּ֗אמֶר לְהָבִ֞יא אֶת־סֵ֤פֶר הַזִּכְרֹנוֹת֙ דִּבְרֵ֣י הַיָּמִ֔ים וַיִּהְי֥וּ נִקְרָאִ֖ים לִפְנֵ֥י הַמֶּֽלֶךְ׃
In derselben Nacht wich der Schlaf des Königs. Da gebot er, dass man ihm das Buch der Denkwürdigkeiten, die Zeitgeschichte, bringe; und sie wurde gelesen vor dem Könige.
Tosefta Megillah
The obligation of the Megillah [is to read it] from the beginning until the end, the words of Rabbi Meir. Rabbi Yehuda says, from [the words] "A Jewish man" (Esther 2:5). Rabbi Yosei says, from [the words], "After these events" (Esther 3:1). Rabbi Shimon ben Elazar, from "That night" (Esther 6:1). But all agree that [regardless of the point at which one started], the obligation is to complete [the Megillah] until the very end.