Taharos 2:8 - 3:1

האוכל אוכל שני לא יעשה בבית הבד – he should not engage in the making of [olive] oil in the olive press, for Rabbi Yehoshua above (in Mishnah 2 of our chapter) agrees with Rabbi Eliezer that a person who consumes food that is second degree [of ritual impurity] he himself becomes second degree [of ritual impurity and invalidates the heave offering and defiles liquids to be first degree [of ritual impurity] (that is the oil).

על גב הקודש – on the purification of Holy Things.

הרי אלו כחולין – and they don’t come into the category of third-degree [of ritual impurity].

הרי אלו כתרומה – and they do have a third degree [of ritual impurity]. And these Tannaim/Mishnaic teachers both of them (see the previous Mishnah) hold that unconsecrated foods that were made through the purification of Holy Things are not similar to Holy Things, for there isn’t anything that makes fourth degree [of ritual impurity] other than Holy Things from Holy Things alone. And they dispute with the Mishnah above (i.e., the previous Mishnah) that teaches that “third degree [of ritual impurity] spoils foods of Holy Things”/"השלישי שבכולן ...פוסל לאוכלי קודש".

הרוטב והגריסין שהן משקה טופח (the broth/juice/jelly of meats, and the pounded beans which moisture dripping on them/running liquid) – they are so moist when they have on them enough to moisten other objects.

הרי הן תחילה -that they are considered as a liquid.

קרשו הרי אלו שניים (if they became congealed, they are second-degree [of ritual impurity]) – for since they congealed they are considered like edibles that came in contact with liquids.

חזרו ונמוחו כביצה מכוון טהור (if they once again dissolved – if they are the volume of an egg exactly, it is pure) – that the status of food left from them and the status of liquid descended upon them, and their defilement blossomed when they were changed, but there isn’t to this liquid anything that will defile it, for when the first drop departed, the food was reduced from that of the size of an egg’s bulk, and less than an egg’s bulk it doesn’t defile others, but more than an egg’s bulk it is impure, as the reason is explained [in the Mishnah] , for when the first drop departed , that drop was defiled with an egg’s bulk of impure food, and when all of it dissolved afterwards, the drop returned and defiled everything.