Avodah Zarah

GEMARA. R. Huna said: As soon as the wine begins to flow  it may become nesek. But we learn in our Mishnah: A WINEPRESS [CONTAINING] TRODDEN [GRAPES] MAY BE PURCHASED FROM A HEATHEN EVEN THOUGH IT WAS HE THAT LIFTED [THE TRODDEN GRAPES] WITH HIS HAND AND PUT THEM AMONG THE HEAP!  — R. Huna said: This refers to a winepress which is stoppered and full.  Come and hear: AND [THE JUICE] DOES NOT BECOME YEN NESEK UNTIL IT DESCENDS INTO THE VAT!  — Similarly here [says R. Huna, the Mishnah deals with] a vat which is stoppered and full.  Come and hear: WHEN IT HAS DESCENDED INTO THE VAT, WHAT IS IN THE VAT IS PROHIBITED BUT THE REMAINDER IS PERMITTED!  — R. Huna said: There is no contradiction; one teaching is from the older Mishnah and the other from the later Mishnah;  for it has been taught: 'At first [the Sages] used to say (B.D.D.)  that [Israelites] may not glean grapes together with a heathen [and bring them] into a winepress,  for the reason that it is forbidden to cause defilement to the ordinary foodstuffs  of the Land of Israel, nor may they tread grapes together with an Israelite who works with his fruits while he is in a state of defilement for the reason that it is forbidden to assist transgressors; but they may tread grapes together with a heathen in a winepress.'  Consequently no attention is here paid to the view of R. Huna.  'Later [the Rabbis] said (D.B.B.):  [Israelites] may not tread grapes together with a heathen in a winepress,' for the reason given by R. Huna,