Halakhah for Rosh Hashanah 53:9

אלא למה מאריך בשופר לידע שמצות היום בשופר:

This shows that since an interest is taken in these,<span class="x" onmousemove="('comment',' Lit., 'endeared'. I.e., a greater interest than in the Torah, since they come more rarely.');">¹⁶</span> the hearer pays close attention. So here, since an interest is taken, he pays close attention and hears [the two sounds].

Sefer Mitzvot Gadol