https://thornhillkollel.com/wp-content/uploads/2017/07/Megilla-perek-aleph-mishna-2-how-the-megilla-could-be-read-on-any-other-day-besides-the-14th-or-15th-1-1.mp3“Megilla perek aleph mishna 2 how the megilla could be read on any other day besides the 14th or 15th”.