New answers tagged megillat-esther
Note that the word אם (if) is not in the mishna. I would read it as "they read". You can have the case in which it was announced before Adar that there would be an Adar Sheni and people may or may not read in Adar Rishon as well as the case in which it is not announced until after Purim. This teaches that even though you might think that a late announcement ...
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