Hilchot Shofar 1:1-2 (What kind of horn is acceptable for use as a shofar?)
6:34 pm
How do we know that a shofar must be used on Rosh Hashanah? (The Torah never explicitly mentions a shofar regarding Rosh Hashanah.) What kind of animal’s horn is acceptable? How was shofar blowing fundamentally different in the Beit HaMikdash?