He prohibited us from eating forbidden mixtures specifically of the vineyard. And that is His, may He be exalted, saying, "lest the expansion become separated (tikdash)" (Deuteronomy 22:9). And the tradition (Chullin 115b) appeared - "'Lest tikdash,' lest tukad esh" (it be burnt by fire)," meaning to say, that it not be permissible to benefit from it. And you have already seen the principle - Wherever it is stated, Lest; or Do not, it is nothing other than a negative commandment (Zevachim 106a). And in the second chapter of Pesachim (Pesachim 24b), when they said, "We do not give lashes for any of the prohibitions of the Torah unless it is in the way of their enjoyment" - meaning to say - that anything the eating of which is forbidden is liable for its eating when he enjoys it - they said afterwards, "Everyone concedes about forbidden mixtures of the field, that we give lashes even when it is not in the way of its enjoyment. What is the reason? Since, eating, is not written about them; but rather, 'lest tikdash,' lest tukad esh." And the regulations of this commandment have already been explained in Tractate Kilayim. And one is only liable for it by Torah law in the Land of Israel. (See Parashat Ki Tetzeh; Mishneh Torah, Forbidden Foods 10.)