TT #775 · Parashas Ki Seitzei · Seventh Aliyah · Passuk 25:14
You shall not have in your house two kinds of measures, a large and a small.
Torah Temimah points to Sifrei / Bava Batra.
TT lemma: אֵיפָה וּמֵאֵיפָה.
אֵיפָה וּמֵאֵיפָה – גְּדוֹלָה וּקְטַנָּה.
English: “An ephah and an ephah” — a large one and a small one.
On the daf / in context: Parallel to the stone weights: two different measures of the same name for fraudulent use.
Derash defining the dual ephah.
One may not keep two ephah measures of different sizes for cheating.