Are we required to bow during the 'Aleinu prayer when reciting the line starting with ״ואנחנו כורעים״? If there are differing halakhic rulings or customs, which I assume there are, their sources ...
Does anyone know the origin of the custom to spit in Aleinu after the words Shehem mishtachvim lahevel vlarik Where did it start? and in which sforim it is mentioned? I have seen the sefer Hayom ...
The words "Sheheim Mishtachavim Li-Hevel Voryk Umispallelim El Eil Lo-Yoshiya" - Was this originally part of Aleinu and then removed, or was it added later to Aleinu? Why was this done?
Why do some count the Omer before Aleinu and some after?
What are all the times when we say the t'fila beginning with the words "עלינו לשבח" commonly known as "Alenu"?
It seems like (other than Chabad) most people do not say Al Tira at the end of davening - they finish with the end of Aleinu/V'Al Kein. Is this an error or is this intentional? If it is intentional ...