Hilchot Berachot 2:5-6 (Changes to Birkat Hamazon for Shabbat, holidays, and Rosh Chodesh)
3:45 pm
What are the additions to Birkat Hamazon for Shabbat, Yom Tov, Rosh Chodesh, and other holidays? Does the Rambam imply that the text of the berachot is slightly different on Shabbat, even apart from the additions?