וּבַיּ֣וֹם הַשֵּׁנִ֡י נֶאֶסְפוּ֩ רָאשֵׁ֨י הָאָב֜וֹת לְכָל־הָעָ֗ם הַכֹּֽהֲנִים֙ וְהַלְוִיִּ֔ם אֶל־עֶזְרָ֖א הַסֹּפֵ֑ר וּלְהַשְׂכִּ֖יל אֶל־דִּבְרֵ֥י הַתּוֹרָֽה׃
And on the second day were gathered together the heads of fathers’houses of all the people, the priests, and the Levites, unto Ezra the scribe, even to give attention to the words of the Law.
Read halakhic rulings (Jewish law) on Nehemiah 8:13 from the Mishneh Torah and classical halakhic sources, free online.