but one may not harvest grapes with him. After the harvest the grapes are brought to the winepress, which is ritually impure. This would render the grapes impure, and it is prohibited to render produce of Eretz Yisrael impure. In the case of a Jew who produces his wine in a state of ritual impurity, one may not tread on grapes nor harvest them with him, as it is prohibited to assist transgressors. But once he has produced his wine, one may take the barrels to the winepress with him, as the wine is already impure. And one may also bring the barrels from the winepress together with him.

Similarly, in the case of a baker who makes his bread in a state of ritual impurity, one may not knead or arrange the dough in the shape of bread together with him, so as not to assist in a transgression. But one may take the bread with him to the bread merchant [lapalter].

GEMARA: Rav Huna says: With regard to wine, once it begins to flow toward the exit from the winepress it can become wine used for a libation in idol worship if touched by a gentile. The Gemara asks: But we learned in the mishna: One may purchase from a gentile a winepress in which the grapes have been trodden on, despite the fact that the gentile took grapes in his hand and placed them on the pile of grapes that remained to be trodden on? Presumably the wine began to flow once the grapes were pressed, and yet the mishna states that the wine is not forbidden. Rav Huna said: The mishna is referring to a winepress that is stoppered and full, and therefore the wine does not flow.

The Gemara suggests: Come and hear a proof from the mishna: And the gentile’s touch does not render the grape juice wine used for a libation in idol worship until it descends into the collection vat. This indicates that even if the wine flows it does not become wine used for a libation before it descends into the vat. The Gemara answers: Here, too, the mishna is referring to a winepress that is stoppered and full, and the wine does not flow.

The Gemara suggests: Come and hear a proof from the mishna: Once the wine descended into the collection vat, that which is in the vat is prohibited, and the rest that did not yet descend into the vat is permitted, even though it already began to flow. Rav Huna said: This is not difficult. Here, in the mishna, the halakha is stated in accordance with the initial version of the mishna. There, in my ruling, the halakha is stated in accordance with the ultimate version of the mishna.

This is as it is taught in a baraita: Initially, the Sages would say the following halakhot whose mnemonic is bet, dalet, dalet, which stands for harvesting [botzrin], treading [dorkhin], and treading [dorkhin]: One may not harvest grapes with a gentile in order to bring them to the winepress, as this would render the grapes ritually impure and it is prohibited to impart impurity to the non-sacred produce that is in Eretz Yisrael. And one may not tread on grapes together with a Jew who produces wine from his fruit in a state of ritual impurity, as it is prohibited to assist transgressors. But one may tread on grapes in the winepress together with the gentile. The Gemara comments: And we are not concerned about the ruling of Rav Huna that from the time that it flows the wine is rendered wine used for a libation.

The baraita continues: But the Sages later revised this halakha and said the following halakhot whose mnemonic is dalet, beit, dalet, which stands for treading [dorkhin], harvesting [botzrin], and treading [dorkhin]: One may not tread on grapes in the winepress together with the gentile. The Gemara comments: This is due to the ruling of Rav Huna that from the time that it flows the wine can be rendered wine used for a libation. The gentile usually touches the flowing wine while treading on the grapes, rendering the wine forbidden. Therefore, if a Jew receives payment for treading on the grapes with the gentile, he is profiting from an item from which deriving benefit is prohibited.