Reference for Demai 2:5
רַבִּי מֵאִיר אוֹמֵר, אֶת שֶׁדַּרְכּוֹ לְהִמָּדֵד בְּגַסָּה וּמְדָדוֹ בְדַקָּה, טְפֵלָה דַקָּה לַגַּסָּה. אֶת שֶׁדַּרְכּוֹ לְהִמָּדֵד בְּדַקָּה וּמָדַד בַּגַסָּה, טְפֵלָה גַסָּה לַדַּקָּה. אֵיזוֹ הִיא מִדָּה גַסָּה, בְּיָבֵשׁ, שְׁלשֶׁת קַבִּין, וּבְלַח, דִּינָר. רַבִּי יוֹסֵי אוֹמֵר, סַלֵּי תְאֵנִים וְסַלֵּי עֲנָבִים וְקֻפּוֹת שֶׁל יָרָק, כָּל זְמַן שֶׁהוּא מוֹכְרָן אַכְסָרָה, פָּטוּר:
Rabbi Meir says, “[In a case of] that which it is customary to measure in large amounts but was measured in small amounts, the small amounts are of secondary importance to the large amounts. [In a case of] that which it is customary to measure in small amounts, but was measured in large amounts, the large amount is of secondary importance to the small. Which is a large measurement? In dry [produce], three <i>Kavin</i> [specific unit of volume], and in wet [produce], a <i>Dinar</i> [specific unit of money].” Rabbi Yosi says, “Baskets of figs and baskets of grapes and a heap of greens, every time they are sold by approximation, they are exempt.”