Talmud for Bava Batra 6:3

כיני מתניתא וסד בסיד אם סד בסיד כל שהוא אם לא סד בסיד שלשה טפחים. מהדא מרחיקין הגפת והזבל והמלח והסיד והסלעים מכותל חבירו שלשה טפחים או סד בסיד. הכא את מר מפני שהסלעים מרתיחין וכא את מר אין מרתיחין אמר רבי יוסי כאן וכאן אין הסלעים מרתיחין אלא מפני שעושין עפר תחוח ומלקין את ארצות הכותל. תני בצונם מותר והיך אמרין ר' יוחנן נפק מכנישתא ושפך מים לחודי תרעא ולא ידעין אי משום דהוה צונם ואין משום דהוה ביה צער ולא הוה יכיל מסיבר. הדא דתימר בריחיא דתמן

Jerusalem Talmud Kilayim

MISHNAH: Every seah that contains a quarter¹A quarter qab which is ¹/₂₄ seah. Here one speaks about seeds. Since seeds usually come mixed with weeds and other seeds, some sowing of different kinds together is unavoidable. In Baba Batra, Mishnah 6:2, up to a quarter qab of foreign material in a seah of grain is established as the standard accepted in any trading contract unless otherwise specified. From the Biblical requirement, it is only necessary that the farmer have no intention of sowing the undesirable seeds with his crop. But in order to avoid the appearance of intentional kilaim, the rabbis gave an upper limit also of one qab in 24 before requiring action. of seeds from another kind should be diminished²Some of the foreign seeds have to be taken out, so that the entire contamination is brought below the limit. R. Yose requires that once one has started cleaning up the seeds, all foreign seeds should be eliminated.; Rebbi Yose says, he must pick it out, whether it be from one kind or from two kinds³Kinds of weeds and contamination with other crops. Rebbi Simeon says that each kind of contamination has its own limit, Rebbi Yose says that all those are counted together which are kilaim in any way; the Sages say that everything which is kilaim with the main crop is added together. So if wheat seed is contaminated with barley, zewanin, and peas, and together they are more than one in 24 but any two of them together are less than that amount, then for the Sages one does not have to act since zewanin are not kilaim with wheat, but R. Yose would require that the entire seed grain be sifted since zewanin are kilaim with peas.. Rebbi Simeon said, they said it only for one kind, but the Sages say, everything that is kilaim with the seah counts together for a quarter.
When is this said³²That a quarter kab of foreign seeds makes a seah of seeds unusable.? Grain with grain, legumes with legumes, grain with legumes, legumes with grain³³All these need approximately one seah for a field of 2500 square cubits (a bet seah). But if seeds need appreciably less than that, the amount which makes seed grain unusable is 1 in 24 of the amount used for the contaminant. It was already explained in Halakhah 1, Note 22, that for kitchen greens whose seeds are not edible, the amount of seed used for one bet seah is only one sixth or one twelfth of a seah. The amount of these seeds sufficient to make a seah of seed grain unusable is ¹/₂₄ of either a qab or half a qab.. In truth, they said that garden seeds which are not eaten add up together for one in 24 when they fall on a bet seah. Rebbi Simeon said, that which they said to restrict, they also said for leniency. Flax seeds³⁴This is explained in the Halakhah, text following Note 44. in grain add up together for one in 24 when they fall on a bet seah.

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