Tevul Yom 2:6 - 2:7

חבית ששקעה (a jar which sunk) – a wine jug of heave-offering/priest’s due that fell into a cistern and sunk into the wine that is in cistern, and the wine that is in the cistern is unconsecrated and floats above on the top of the cistern. And he (i.e., the person who had immersed himself that day/Tevul Yom) touched/came in contact with it, etc. If he let down his hand into the mouth of the cistern...

מן השפה ולפנים הרי זה חיבור (from the rim and inward it is deemed connected) – and all the wine that is in the wine jug is invalidated, and even if the wine jug from the outset was not completely full from the wine of heave-offering/priest’s due.

מן השפה ולחוץ – that he didn’t put his hand into the mouth of the wine jus, even though he touched the wine of the cistern that is opposite the mouth of the wine jug, nevertheless if is not connected.

אפילו על גבי רום קומה (even if [the level of the wine in the cistern] was a man’s height [above the sunken jar]) – that the wine that was in the cistern ascended on the face of the jug to the height of a person, if he touched corresponding to its mouth, it is connection. But the Halakha Is not according to Rabbi Yohanan ben Nuri.

מפיה ומשוליה טמאה (whether at its rim or from its bottom) – from its mouth, it is ritually impure, for since all the wine that is below becomes the base for the upper part, it is a connection. And from its bottom also, since all the wine is conducted after the incision, it is a connection.

אבל נקבה מצדה מכאן ומכאן טהורה - and there is no invalidation/other than what he touched, and it is neutralized in one and one-hundred. But the Halakha is not according to Rabbi Yehuda.

ונגע טבול יום בקילוח (and the person who had immersed himself that day touched the continuous flow/jet) – the continuous flow/jet alone is in validated, for the uninterrupted flow of liquid poured from vessel to vessel is not considered a connection (of the two liquids) -either for communicating uncleanness or for producing cleanness (see Tractate Taharot, Chapter 8, Mishnah 9), it is like impure priest’s due/heave offering that was mixed with pure, and is neutralized in one and one-hundred, like heave-offering/priest’s due with non-consecrated produce. And in this, even the Rabbis admit that a continuous flow/jet is not considered a connection to vessels, like the incision that is on the side of the jug/jar. And even though the liquids have no purification from their defilement, that is that it is not removed through dipping of a vessel, filled with unclean liquid, so as to make its surface level with the surface of the water into which it is dipped in a Mikveh like that for water, but for the reason of nullification, they are nullified with one in one-hundred. And specifically, when the person who had immersed himself that day/Tevul Yom had contact, the liquids are invalidated, because the person who has immersed himself that day/Tevul Yom does not defile. But with the rest of the defilements, he restores what is in the uninterrupted jet, he defiles everything that is in the vessel through contact.