Rashi on Leviticus 25:9/רש"י על ויקרא כ״ה:ט׳

1והעברת has the same meaning as the verb in (Exodus 36:6) “and they caused it to be proclaimed (ויעבירו קול) in the camp” — it is a term for proclamation (i. e. והעברת has not the literal meaning of causing a cornet to pass, i. e. to carry it about in the land as a symbol of freedom) (Rosh Hashanah 34a).

2ביום הכפורים [ON THE TENTH DAY OF THE SEVENTH MONTH] ON THE DAY OF EXPIATION [SHALL YE CAUSE THE CORNET TO SOUND] — Since Scripture states “on the day of expiation” do I not know that it is “on the tenth day of the seventh month”? Why, then, does Scripture add “on the tenth day of the month”? But it adds these words in order to tell you: the blowing Of the שופר on the tenth day of the month sets aside the Sabbath (supersedes the Sabbath Law) throughout all your land (בכל ארצכם); whilst the blowing of the Shofar on the New Year, the first day of that month, does not supersede the Sabbath Law “throughout all your land”, but only at the law-court (בי"ד) alone (Sifra, Behar, Section 1 5; Rosh Hashanah 29b).