Kosher certification agency

I think I was a student then.

So the Rabbonim in Eretz Yisrael announced no one should buy a shofar unless it has a Hechsher 'cause it could be that, uh, some wise guy melted it, and he poured it into a form.

What if he stole the shofar? He's had a Mitzvah Bo Ve'aveira, and it's Pasul V'nam.

So the Shulchan Aruch asks him, "You are Yetzer because you're not Yotze with the Shofar, you're Yotze with the Shemia of the Kol.