Learn the “גמרא דף מד: “אמר אייבו until next “אמר אייבו
Questions:
What needs to be done with the aravos in order to fulfill the mitzvah of Hoshanas?
See רש”י דף מג: “והביאום (three lines from bottom of the Amud)
And רמב״ם הלכות לולב פרק ז הלכה כב
In conclusion of the Gemara is the taking of Aravos on Hoshana Rabbah זכר למקדש or מנהג נביאים?
What do we conclude lhalacha in regards to making a bracha on taking the Aravos?
Learn טור אורח חיים ס’ תרס”ד סעיף ב for a few different opinions
https://hebrewbooks.org/pdfpager.aspx?req=14268&st=&pgnum=595
And שולחן ערוך סע’ ב, ד-וwith the משנה ברורה for final conclusion
https://hebrewbooks.org/pdfpager.aspx?req=60391&st=&pgnum=271
Major Question:
The גמרא דף מג concluded that Aravah was בנטילה – everyone waved the Aravos each day of Sukkos in the Beis Hamikdash and the זכר למקדש replicates the way it was performed in the Beis Hamikdash & on דף מד the aravos were taken when encircling the Mizbaich.
Why is our minhag to walk around the bima each day of Sukkos one time only with the set of Daled Minim and on Hoshana Rabbah seven times. We should be holding aravos when circling the bima as they did in the Beis Hamikdash when circling the Mizbaich?
But this seems incongruent with how the Beis Hamikdash as on the practice Especially since we conclude that Hoshanos we’re instituted זכר למקדש for the נטילה which was walking around the mizbaich?
See בית יוסף & ב”ח סעיף ג
https://hebrewbooks.org/pdfpager.aspx?req=14268&st=&pgnum=595