17הָיָה עוֹבֵר בַּכֶּרֶם וְנָפְלוּ מִמֶּנּוּ זְרָעִים אוֹ שֶׁיָּצְאוּ עִם הַזְּבָלִים אוֹ עִם הַמַּיִם אוֹ שֶׁהָיָה זוֹרֵעַ אוֹ זוֹרֶה בְּשָׂדֶה לָבָן וּסְעָרַתּוּ הָרוּחַ לַאֲחוֹרָיו וְנָפְלוּ הַזְּרָעִים בַּכֶּרֶם וְצָמְחוּ הֲרֵי זֶה לֹא נִתְקַדֵּשׁ שֶׁנֶּאֱמַר (דברים כב ט) "אֲשֶׁר תִזְרַע" וְזֶה לֹא זָרַע. וְחַיָּב לַעֲקֹר כְּשֶׁיִּרְאֶה. וְאִם קִיְּמָן הֲרֵי זֶה קִדֵּשׁ. סְעָרַתּוּ הָרוּחַ לְפָנָיו וְרוֹאֶה הַזְּרָעִים שֶׁנָּפְלוּ לַכֶּרֶם הֲרֵי זֶה כְּזוֹרֵעַ. וְכֵיצַד יַעֲשֶׂה. אִם צָמְחוּ הָעֲשָׂבִים יַהַפְכֵם בְּמַחְרֵשָׁה וְדַיּוֹ. וְאִם מְצָאָן שֶׁנַּעֲשׂוּ אָבִיב יְנַפֵּץ אוֹתוֹ אָבִיב כְּדֵי לְהַשְׁחִיתוֹ שֶׁהַכּל אָסוּר בַּהֲנָאָה. וְאִם מְצָאָהּ שֶׁנַּעֲשֵׂית דָּגָן הֲרֵי זוֹ תִּשָּׂרֵף. וְאִם רָאָה אוֹתָן וְקִיְּמָן הֲרֵי אֵלּוּ יִשָּׂרְפוּ עִם הַגְּפָנִים הַסְּמוּכוֹת לָהֶן:
[The following rules apply when a person] was passing through a vineyard and seeds fell from him or they were brought [into a field] with fertilizer or water, or one was sowing or winnowing in a field of grain and the wind carried the seeds behind him and the seeds fell into a vineyard and sprouted, they do not become hallowed. [This is derived from the prooftext cited above] which states "which you sowed," and this was not sowed. He is, [nevertheless,] obligated to uproot it when he sees it. If he maintains it, it becomes hallowed. If the wind carried the seeds before him and he saw them fall into the vineyard, he is considered to have sown them. What should he do if their grasses grow? He should turn them over with a plow; this is sufficient. If he discovered that they have already ripened, he should crush the portion that ripened, for it is forbidden to benefit from the entire [plant]. If he discovers that grain has already sprouted, it must be burnt. If he saw it and maintained it, it must be burnt together with the vines adjacent to it.