Once, at Rabbi Yosef Yitzchak of Lubavitch’s festive meal of the second day of Rosh Hashanah, many Chassidim pushed to enter the room. The Rebbe was not satisfied with this and said, “What a pity, at this time you can add millions of words to the sefirah of malchut.” Immediately the Chassidim went out and started saying Psalms out loud.

(Sefer Hasichot 5705, p. 10)