תרומות ה׳:ו׳ - ה׳:ז׳

אין המדומע מדמע אלא לפי חשבון – because what that is Terumah/heave-offering in this Seah of mixed heave offering and unconsecrated produce we require one-hundred of the unconsecrated produce, but we don’t require one-hundred Seah corresponding all of that Seah of mixed heave-offering and unconsecrated produce , which is not considered completely Terumah/heave-offering to prohibit secondary unconsecrated produce.

ואין המחומץ מחמץ אלא לפי חשבון – started dough of unconsecrated produce that had leavened in leaven of heave-offering, it is all forbidden to foreigners (i.e., non-Kohanim) and if there fell from that started dough into another piece of stared dough of heave-offering and became leavened, it is not forbidden other than according to the calculation [of the quantity of true heave-offering contained in the mixture] of the measure of leave of Terumah that is mixed in it, and does not forbid another piece unless there fell from the first a measure so large that there is in the leaven of Terumah that is combined in it in order to leave the later piece without combination of the unconsecrated produce that is combined with heave-offering.

ואין מים שאובים פוסלים את המקוה אלא לפי חשבון – A Mikveh/ritual bath that has in it twenty-one Seah of rain water, we will fill/draw on its shoulder nineteen [additional] Seah and let it run through a conducting channel/gutter into the Mikveh (see Tractate Temurah 12b) and they are pure, and even though three Seah of drawn waters disqualify a Mikveh, the drawn waters are kosher when it is through a conducting channel it was there that most of the measure of the Mikveh, which is twenty-one Seah of rain water, according to the calculation, for the drawn waters do not disqualify the Mikveh when they are going through a conducting channel unless there are twenty [Seah] of drawn water, for isn’t there the majority of the measure of the Mikveh from rain waters. And the Halakha is according to the Sages.

הגביהה – according to the law of heave-offering that is neutralized in one-and one-hundred.

הרי זו מותרת – and one needs to lift it up [out of the mixture].

עד שתרבה תרומה על החולין – that is, until there would fall there fifty-one [parts] of heave-offering/Terumah, but half by half is permitted.