Commonly recited from Psalms is Chapter 118, recited in Hallel on Rosh Chodesh and Festivals. It begins (v. 1-4): הוֹד֣וּ לַיהוָ֣ה כִּי־ט֑וֹב כִּ֖י לְעוֹלָ֣ם חַסְדּֽוֹ׃ Praise the LORD, for He is good, His steadfast love is eternal. יֹֽאמַר־נָ֥א יִשְׂרָאֵ֑ל כִּ֖י לְעוֹלָ֣ם חַסְדּֽוֹ׃ Let Israel ...

If someone did havdalah before davening maariv, would he have to repeat shemoneh esrei if he forgets to add “atah chonantanu”?

The Shulchan Arukh Orach Chayim 651:1 writes that during the hallel we shake at three verses: הוֹד֣וּ לַֽיהוָ֣ה כִּי־ט֑וֹב כִּ֖י לְעוֹלָ֣ם חַסְדּֽוֹ׃ (Psalms 118:1) אָנָּ֣א יְ֭הוָה הֽוֹשִׁ֘יעָ֥ה נָּ֑א (Psalms 118:25 – just the first half) הוֹד֣וּ לַֽיהוָ֣ה כִּי־ט֑וֹב כִּ֖י לְעוֹלָ֣ם חַסְדּֽוֹ׃ P...