Shulchan Aruch, Orach Chayim Siman 599

Siman 599

Presented here for study, not as a practical ruling. The Shulchan Aruch rules by Sephardi custom, the Rema's glosses by Ashkenazi custom, and the Kitzur follows Ashkenazi custom. For a practical question, ask your rabbi.

א לֵיל רֹאשׁ הַשָּׁנָה שֶׁחָל לִהְיוֹת בְּמוֹצָאֵי שַׁבָּת, אוֹמְרִים: וַתּוֹדִיעֵנוּ.
1 When the night of Rosh HaShanah falls on Motza'e Shabbat, we say "Toda'inu."