Deuteronomy 12:22

אך כאשר יאכל את הצבי וגו׳ BUT ONLY AS THE GAZELLE [AND THE HART] IS EATEN, [SO THOU SHALT EAT THEM] — i.e. thou art not admonished to eat them in a state of cleanness as is the case with sacrifices which you slaughter in a holy place; if, however, you will argue: How is the case with the gazelle and the hart? Their fat is permitted as food; so, too, is the fat of non-consecrated domestic animals (חולין) permitted! Then I reply: Scripture says אך (which word has a limitative force and thus indicates that חולין are not to be treated like the gazelle and the hart in every respect) (cf. Bekhorot 15a).

אַ֗ךְ כַּאֲשֶׁ֨ר יֵאָכֵ֤ל אֶֽת־הַצְּבִי֙ וְאֶת־הָ֣אַיָּ֔ל כֵּ֖ן תֹּאכְלֶ֑נּוּ הַטָּמֵא֙ וְהַטָּה֔וֹר יַחְדָּ֖ו יֹאכְלֶֽנּוּ׃

Even as the gazelle and the deer is eaten, so thou shalt eat them: the unclean and the clean shall eat of them alike.