אמר אביי ר' אלעזר שפיר קא קשיא ליה ושמואל לא שפיר קא משני ליה דקשיא ליה לר' אלעזר מיתה דבידי שמים ומשני ליה שמואל מיתת ב"ד דלמא שאני מיתת ב"ד דחמירא
why should one bear sin? Hence it follows that if one separates [<i>terumah</i>] from inferior [produce] for better, the <i>terumah</i> is <i>terumah</i>. But [when you say,] even if they are of many moulds, let us fear lest he come to separate from what is liable for what is [now] exempt,<span class="x" onmousemove="('comment',' Having been tithed already.
');"><sup>13</sup></span> and vice versa!<span class="x" onmousemove="('comment',' V. note 2. Since this fear is not entertained, it follows that even R. Meir did not hold that the law of demai was enacted with the same stringency as Biblical tithes.
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Tosefta Demai
They did not permit selling Demai except to a wholesale dealer (=סיטון, per Jastrow). A homeowner who sells both this and that (i.e., both large and small quantities, per Lieberman) needs to tithe, the words of Rabbi Meir. But the Sages say, one wholesale dealer and one homeowner are permitted to sell [Demai] and to send it to their friend, and give it to him as a present.
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Tosefta Demai
One who purchases from a merchant tithes from each and every [bread] mold (see Menachot 94a:11), and if [the merchant] was bringing [vegetables from various farmers] and gathering them before [the purchaser], he takes tithes from each and every cucumber and from each and every bunch [of vegetables], and from each and every date. One who purchases from a shopkeeper, and goes back and takes from him a second time, even though he recognizes the barrel [of wine], he may not tithe from this [purchase] on behalf of that [prior purchase (see Dem. 5:6)].
