English: “You shall guard the matzos” — matzah that is watched for the sake of matzah; this excludes loaves of a todah and wafers of a nazir that are not watched for the sake of matzah but for the sake of the offering.
On the daf / in context: See the cited source for the full section.
Type of Learning
Derash on the verse.
What Is Learned
Matzah for the mitzvah must be guarded for that purpose, not only for another korban.