וַיָּק֙וּמוּ֙ עַל־עָמְדָ֔ם וַֽיִּקְרְא֗וּ בְּסֵ֨פֶר תּוֹרַ֧ת יְהוָ֛ה אֱלֹהֵיהֶ֖ם רְבִעִ֣ית הַיּ֑וֹם וּרְבִעִית֙ מִתְוַדִּ֣ים וּמִֽשְׁתַּחֲוִ֔ים לַיהוָ֖ה אֱלֹהֵיהֶֽם׃ (פ)
And they stood up in their place, and read in the book of the Law of the LORD their God a fourth part of the day; and another fourth part they confessed, and prostrated themselves before the LORD their God.
Read halakhic rulings (Jewish law) on Nehemiah 9:3: and classical halakhic sources.