Those who have the custom to say the Yotzros for Musaf on Shabbos Shekalim finish off each stanza with the following words: אור פניך עלינו אדון נשא, ושקל אשא בבית נכון ונשא Hey, wait a second, ...
Why is 'misod chachomim unevonim' sometimes said and sometimes omitted in the repetition of the Amidah?
In Askenazi communities, the piece beginning 'misod chachomim unevonim' is said at the repetition of the Amidah at Shacharis when there are piyuttim (except Purim) and on Musaf on Yomim Noraim as well ...
Why are there yom tov additions to the first b'racha before sh'mone esre in the morning and to the third, but never to the second? (In maariv, by contrast, every birchas k'rias sh'ma has yom tov ...