Sifrei Devarim 230

לא תזרע כרמך כלאים. מה אני צריך, והלא כבר נאמר (ויקרא יט) שדך לא תזרע? (מ"ק ב וש"נ) מלמד שכל המקיים כלאים, עובר בשני לאוין.

(Devarim 22:9) "You shall not sow your vineyard with mixed seed": [I might think that he may not sow one (variety) by itself and another by itself; it is, therefore, written "kilayim" (mixed seed), but each by itself is permitted. Variantly:] "kilayim": Why is this needed? Is it not already written (Vayikra 19:19) "You shall not sow your field kilayim"? To impose liability for both "vineyard" and "field." We are hereby taught that one who sows kilayim in a vineyard transgresses two negative commandments.

אין לי אלא כרם שלם. מנין אפילו כרם יחידי ועושה פירות? תלמוד לומר כרם, מכל מקום.

This tells me only of a full-grown vineyard. Whence do I derive (the same for) one with a few fruitful vines? From ("the produce of) the vineyard" — any vineyard. If one trains a grapevine onto seeds, even for (a distance of) one hundred ells, the grapevine is forbidden. This (verse) tells me (that it is forbidden) only in a fruitful vineyard. Whence do I derive (the same for) one that is not fruitful? From "the vineyard" — in any event. This tells me only of your vineyard. Whence do I derive (the same for) the vineyard of others? According to R. Yossi, from "the vineyard" — in any event. "lest tikdash the fullness of the seed": lest there be forbidden.

ומנין לכלאי הכרם שאסור בהנאה? נאמר כאן "קדש", ונאמר להלן "קדש"; מה להלן איסור הנאה, אף כאן איסור הנאה.

And whence is it derived that it is forbidden to benefit from vineyard kilayim? It is written here "kodesh" (i.e., "tikdash"), and elsewhere, "kodesh," (Vayikra 5:15 "and he sin unwittingly [by deriving benefit] from the holy tings ["kodshei"] of the L-rd.") Just as there, derivation of benefit is being forbidden, here, too, derivation of benefit is being forbidden.

פן תקדש המלאה הזרע (כלאים ז) מאימתי מלאה מתקדשת משתשריש וענבים משיעשו כפול הלבן (המצרי).

"lest there be rejected the fullness of the seed … and the produce of the vineyard." When is the produce rejected? When it takes root. And grapes? When they become like the 'white (egyptian) bean'. "which you shall sow": This tells me only of what he himself sows. Whence do I derive (as likewise interdicted) what his neighbor sows (in the former's field) and which he would like to sustain? From "the seed" — in any event.

הזרע [אשר תזרע]. פרט (כלאים ה) לזרע שיצא עם הזבלים או עם המים. הזורע והרוח מסערתו. יכול שאני (מרבה) [מוציא], הזורע והרוח מסייעתו? ת"ל אשר תזרע.

"which you shall sow": to exclude seed which entered (unintentionally) along with fertilizer or with water, or seed which he sowed and which was blown in by the wind. I might think that also excluded is seed blown in by the help of the wind, (the sower intending this to happen); it is, therefore, written "the seed," (in which the aforementioned instance is subsumed).

(כלאים ה) המקיים קוצים בכרם - רבי אליעזר אומר קדש, שנאמר אשר תזרע. וחכמים אומרים, "זרע" - פרט למקיים קוצים בכרם.

If one sustains thorns in a vineyard, R. Eliezer says he is in transgression of kilayim, it being written "which you sow." The sages say: "the seed" excludes the sustaining of thorns in a vineyard.

ותבואת הכרם. מאימתי התבואה מתקדשת – משתשריש, וענבים - משיעשו כפול הלבן.

"and produce of the vineyard": When is the produce rejected? When it takes root. And grapes? When they become like the 'white (egyptian) bean'.

אין לי אלא כרם שהוא עושה פירות, שאין עושה פירות מנין? תלמוד לומר (כרם) [לא תזרע כרמך], מכל מקום. אין לי אלא כרם שלך, כרם של אחרים מנין? תלמוד לומר (לא תזרע כרמך) [כרם], מכל מקום.

This (verse) tells me (that it is forbidden) only in a fruitful vineyard. Whence do I derive (the same for) one that is not fruitful? From "the vineyard" — in any event. This tells me only of your vineyard. Whence do I derive (the same for) the vineyard of others? According to R. Yossi, from "the vineyard" — in any event.

(כלאים ו) המתיח זמורות של גפן על גבי זרעים, אפילו אמה על אמה, הגפן אסורה היא ופרותיה.

If one trains a grapevine onto seeds, even for (a distance of) one one square ell, the grapevine is forbidden.

יכול לא (יחרש על) [יזרע], זה בפ"ע (ועל) וזה בפ"ע? ת"ל יחדו, אבל זבפ"ע (=זה בפני עצמו) וזבפ"ע - מותר.

I might think that he may not sow one (variety) by itself and another by itself; it is, therefore, written "together", but each by itself is permitted.

(ד"א) כלאים. לחייב משום כרם ומשום שדה.

(Variantly:) "Kilayim":To impose liability for both "vineyard" and "field."

ד"א פן תקדש המלאה, פן תאסר המלאה כדברי רבי יהודה.

Variantly: "lest tikdash the fullness of the seed": lest there be forbidden, as R' Yehuda has said.

אשר תזרע. אין לי אלא שזרע. זרע חבירו ורצה לקיים, מנין? תלמוד לומר תזרע, מכל מקום.

"which you shall sow": This tells me only of what he himself sows. Whence do I derive what his neighbor sows (in the former's field) and which he would like to sustain? From "which you shall sow" — in any event.