Hilchot Shabbat 29:18-19 (Kiddush and Havdalah on Yom Tov)
3:47 pm
What is the source of the mitzvah on making kiddush on yom tov? What is the proper text? And why, on Shabbat, does the blessing conclude, “Who sanctifies Shabbat, Israel, and the holidays” – with the word “Israel” interrupting between “Shabbat” and “holidays”?