My question is closely related to this one. However, that question has an unsourced assumption. So, I'm asking my question, here, hoping that I can get a clearer answer.
Most washing cups (for netilat yadayim) seem to have two handles. Is this required by halacha or is it for convenience or decoration?
I'd like your answer to address all the areas of netilat yadayim as it is done in 4 areas that I know of. (May be others):
- Morning washing upon awakening
- After using the rest room
- Before entering shul
- Before eating bread
Perhaps, each of these has different rules where one would warrant the two handles and others don't.