Rabbi Aryeh Lebowitz

Whoever said that the shmira must be done by the person who's actually making the matzah, maybe shmira just means the guy who's overseeing needs to oversee it l'shma.

That could be that.

That's all it means.

Let's take a look at the mitzvah Yud.

Oh, Yud, he discusses this.

Practical halacha, halacha l'maysa, the maharil, in Hilchas Tikun HaMatzos, in the Primagaddon, Mishpzot Zav, Simen, Taf Samach, Sivkat Nalif, says that when watching the matzah, a person should verbalize as they're watching over the matzah, the same mitzvah's matzah.

That if you don't have that intention while you're baking the matzah, that you're doing it for the mitzvah, you don't fulfill your obligation to shmur a matzah, it doesn't count as shmur a matzah.

So we pass Kamal HaLach and we show like Rashi that the Shemira is not only that it should be Shemira from Chimot, it should be a Shemira Lashma.

At what point do you need the Lashma, the Shemira Lashma?

So this is a further Machlokas in the Rishonim.

The Rif and the Rambam say that you have to watch over this Shmira that you need, needs to be done from the moment that it's cut from the ground.

Shulchan Aruch says that we should follow that.

Make sure from the time that it's cut from the ground, it doesn't come into contact with water, it doesn't become Chameitz, that nothing should happen to it from that moment.

And that's what we advertise as Shmura Matzah.

Any Shmura Matzah you see in the store, anywhere,

machine shmura, hand shmura, all of it is shmira, mishas, ktzira.

From the time that it was cut from the ground, that's shmura matzah.

The rush, however, says that the watching only has to be done from the time you grind it up into flour.

Because if you have raw stalks of wheat that were never ground into flour, so they can get wet, they're not going to become chametz.

Only once it becomes flour is it in danger of becoming chametz.