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Text Excerpt
אמר: אמר קרא ״ראשית״ — ששיריה ניכרין לישראל, יצתה זו שאין שיריה ניכרין.
he said that the verse states: “The first fruits of your grain, your wine, your oil, and the first of the fleece of your sheep, should you give him” (Deuteronomy 18:4), implying that its remnants are recognizable for an Israelite, as the notion of a first part indicates that there is another portion remaining which is fit to be consumed by the Israelite. This teruma is excluded as there is no recognizable remnant left that may be consumed by the Israelite, because it is leavened bread. Since even after this portion has been separated the remainder of the produce may not be eaten, that which was separated does not become teruma.
יתיב רב אחא בר רב עויא קמיה דרב חסדא, ויתיב ואמר משמיה דרבי יוחנן: ענבים שנטמאו — דורכן פחות פחות מכביצה, ויינן כשר לנסכין. אלמא קסבר: משקין מיפקד פקידי, לאימת קא מיטמאי — לכי סחיט להו. לכי סחיט להו ליתיה לשיעוריה.
Rav Aḥa bar Rav Avya sat before Rav Ḥisda, and he sat and said in the name of R' Yoḥanan: With regard to grapes that became ritually impure, one should tread on them less than an egg-bulk at a time, and the wine that comes from them is kosher even for libations because it is ritually pure. Apparently R' Yoḥanan holds: The liquid is stored inside the grape, as the juice is not considered to be part of the grape itself but rather stored in the grape as though contained in a receptacle. According to R' Yoḥanan’s opinion, when do these liquids become ritually impure? This occurs only when one squeezes them, and prior to this the juice remains pure even if the grape was impure. And when one squeezes them, there is less than the minimum measure of grape flesh that would transfer ritual impurity, as food can impart ritual impurity only if it is at least an egg-bulk in size.