Tanach · Rishonim on Tanach · Ramban · Torah

Ramban on Deuteronomy 22:10/רמב"ן על דברים כ״ב:י׳

אוְאָמַר לֹא תַחֲרֹשׁ בְּשׁוֹר וּבַחֲמֹר, וְהוּא הַדִּין לְכָל מִינֵי הַכִּלְאַיִם, וְהִיא מִצְוָה מְבֹאֶרֶת מִן בְּהֶמְתְּךָ לֹא תַרְבִּיעַ כִּלְאַיִם (ויקרא יט יט), שֶׁדֶּרֶךְ כָּל עוֹבֵד אַדְמָתוֹ לְהָבִיא צִמְדּוֹ בְּרֶפֶת אַחַת וְיַרְכִּיב אוֹתָן. וּבֵאֵר בַּשַּׁעַטְנֵז שֶׁאֵינֶנּוּ רַק בְּצֶמֶר וּפִשְׁתִּים, וְהִזְכִּיר לֹא תִלְבַּשׁ, לְלַמֵּד שֶׁאֵין הָעֲלִיָּה אֲסוּרָה אֶלָּא בְּעִנְיַן לְבִישָׁה:
1He states, Thou shalt not plow with an ox and an ass together.187 The same law applies to all diverse species of animals. It is an explanatory commandment of the prohibitions, Thou shalt not let thy cattle gender with a diverse kind,182 for it is the custom of tillers of their soil to bring their working animals into the same stall and gender them.188 And in the matter of sha’atneiz [a garment of mingled stuff] he explained here that it applies only to [a combination of] wool and linen. He mentioned Thou shalt not wear189 in order to teach that coming upon thee [Neither shall there ‘come upon thee’ a garment of two kinds of stuff]182 is forbidden only if it is worn as a garment [indicated by the term “wear” used in the verse before us].190