Daniel 8:1 Halakhah

בִּשְׁנַ֣ת שָׁל֔וֹשׁ לְמַלְכ֖וּת בֵּלְאשַׁצַּ֣ר הַמֶּ֑לֶךְ חָז֞וֹן נִרְאָ֤ה אֵלַי֙ אֲנִ֣י דָנִיֵּ֔אל אַחֲרֵ֛י הַנִּרְאָ֥ה אֵלַ֖י בַּתְּחִלָּֽה׃

In the third year of the reign of king Belshazzar a vision appeared unto me, even unto me Daniel, after that which appeared unto me at the first.

Read halakhic rulings (Jewish law) on Daniel 8:1: and classical halakhic sources.