Talmud for Kilayim 5:2
אין מביאין אילן באילן ירק בירק ולא אילן בירק ולא ירק באילן רבי יהודה מתיר ירק באילן:
Whilst the R. Yosse and R. Aha were together, the former said to the latter: Does it not seem to you that the passage of this half a mile (twilight) lasts but a second? It is certainly my opinion, said R. Aha. However, R. Hiya does not say so, but each twinkling of an eye, measured by the duration of the passage of half a mile (as R. Nehemiah), is doubtful. R. Mena says : I have made an objection in the presence of R. Aha: Have we not learnt elsewhere, that if an impurity is seen, once during the day and again during the intermediate period, or once in the twilight and again on the morrow, when the certainty exists that the impurity dates partly from this day and partly from the next day, there is a certainty as to the circumstances of the impurity, and the sacrifice is obligatory.
Jerusalem Talmud Kilayim
But since practice does not follow R. Eliezer, a discussion is not necessary.) The statement is quoted in Babli Šabbat134b, in the name of R. Ḥanina.. Does this imply that the Sages think that there are no places in Arabia where one stores them for the camels? Let them check it out! The Sages say, where one stores them they are forbidden, but at places where one does not store them they are permitted. But Rebbi Abba bar Zavda cannot follow Rebbi Eliezer16Since practice does not follow Rebbi Eliezer in his disputes with the Sages, and our Mishnah is anonymous, the Mishnah cannot be explained as being R. Eliezer’s.! There, people do not transport horns17R. Simson reads קוֹצִים “thorns;” this is appropriate here. The two manuscripts of the Yerushalmi read קרנים “horns,” which is difficult but not impossible since most points of thorns are horn-shaped. from place to place. But here, people do transport zewānîn from place to place18At places in the Holy Land, zĕwānîn are an object of trade and, hence, a cash crop subject to the rules of kilaim. This was still found true by the Hareubenis in the early 1930’s..