Shulchan Arukh, Orach Chayim Siman 118
Can copy this into an AI, or connect the whole library to your assistant. For deeper learning, you can directly use the original seforim, sites, and apps.
השיבה שופטנו חותם בה מלך אוהב צדקה ומשפט ומר"ה ועד יום הכפורים חותם המלך המשפט: הגה מיהו אם אמר מלך אוהב צדקה ומשפט אין צריך לחזור ולא אמרו שיחזור אלא במקום שכל השנה אומרים האל אוהב צדקה ומשפט [הר"י ספ"ק דברכות וטור והגהות ומנהגים] וע"ל סי' תקפ"ב:
[The blessing of] "Hashiva Shofteinu" ["Restore our judges"] - one concludes it with [the words] "Melekh Ohev Tzedaka u'Mishpat" ["King, Lover of righteousness and justice"]. And between Rosh Hashana and Yom Kippur, one concludes with [the words] "Ha-Melekh Ha-Mishpat" ["The King of Justice"]. Gloss: However, if one said "Melekh Ohev Tzedaka u'Mishpat", one does not have to go back. And they only said that one needs to go back, in a place where they say "Ha'keil Oheiv Tzedaka u'Mishpat" ["The God, Lover of righteousness and justice"] during the entire year. (The R"i in the end of first chapter of Tractate Berachot, and the Tur and Hagahot Maimoni) And see below in Siman 582