רק בכל אות נפשך. בַּמֶּה הַכָּתוּב מְדַבֵּר? אִם בִּבְשַׂר תַּאֲוָה לְהַתִּירָהּ לָהֶם בְּלֹא הַקְרָבַת אֵמוּרִים הֲרֵי אָמוּר בְּמָקוֹם אַחֵר (פסוק כ') "כִּי יַרְחִיב ה' אֶת גְּבוּלְךָ וְגוֹ' וְאָמַרְתָּ אֹכְלָה בָשָׂר וְגוֹ'", בַּמֶּה זֶה מְדַבֵּר? בְּקָדָשִׁים שֶׁנָּפַל בָּהֶם מוּם שֶׁיִּפָּדוּ וְיֵאָכְלוּ בְּכָל מָקוֹם, יָכוֹל יִפָּדוּ עַל מוּם עוֹבֵר? תַּ"לֹ "רַק" (ספרי): רק בכל אות נפשך HOWEVER [THOU MAYEST SLAUGHTER AND EAT FLESH IN ALL THY GATES] IN EVERY LONGING OF THY SOUL — About what is Scripture here speaking? If you say that it speaks about בשר תאוה (flesh eaten for satisfying the appetite — an ordinary meal of meat and not a sacrificial meal) and that this verse is intended to permit it to them without offering the fat portions on the altar, behold, it states in another passage (v. 20) “When the Lord thy God shall enlarge thy boundary … and thou shalt say, I will eat flesh, [because thy soul longeth to eat flesh; thou mayest eat flesh in every longing of thy soul]”! About what, then, is this verse speaking? About consecrated animals which had become blemished, — that they must be redeemed and may then be eaten in anyplace (בכל שעריך). One might think that they may be redeemed and thus divested of their holy character also on account of a transitory blemish! Scripture, however, uses the expression רק (which word has a limitative force) (Sifrei Devarim 71:1).
תזבח ואכלת. אֵין לְךָ בָהֶם הֶתֵּר גִּזָּה וְחָלָב אֶלָּא אֲכִילָה עַל יְדֵי זְבִיחָה (בכ' ו'): תזבח ואכלת THOU MAYEST SLAUGHTER AND EAT [FLESH] — You have no permission to use their fleece or milk (those of consecrated animals that had become blemished), but only the eating of their flesh after ritual slaughtering is permitted (cf. Sifrei Devarim 71:2-3; Bekhorot 15b).
הטמא והטהר. לְפִי שֶׁבָּאוּ מִכֹּחַ קָדָשִׁים שֶׁנֶּאֱמַר בָּהֶם "וְהַבָּשָׂר אֲשֶׁר יִגַּע בְּכָל טָמֵא לֹא יֵאָכֵל" (ויקרא ז'), הֻצְרַךְ לְהַתִּיר בּוֹ שֶׁטָּמֵא וְטָהוֹר אוֹכְלִים בִּקְעָרָה אַחַת: הטמא והטהור THE UNCLEAN AND THE CLEAN [MAY EAT THEREOF] — Because they (the consecrated animals that had become blemished) came to their present status by virtue of once having been consecrated animals, of which it is stated, (Leviticus 7:19) “And the flesh of offerings that toucheth any unclean thing shall not be eaten”, it felt it necessary explicitly to permit in their case that an unclean and a clean person may eat out of the same dish (i.e. together) (cf. Sifrei Devarim 71:7),
כצבי וכאיל. שֶׁאֵין קָרְבָּן בָּא מֵהֶם: כצבי וכאיל AS OF THE GAZELLE AND OF THE HART of which no sacrifice is ever brought.
כצבי וכאיל. לְפָטְרָן מִן הַזְּרוֹעַ וְהַלְּחָיַיִם וְהַקֵּבָה (ספרי): כצבי וכאיל AS OF THE GAZELLE, AND OF THE HART — These apparently redundant words are intended to exempt them (the פסולי המקדשין שנפדו) from the dues of “the shoulder, the two cheeks and the maw” (Deuteronomy 18:3) which are compulsory gifts to the priests in the case of non-holy (חולין) animals (Chullin 130a; Sifrei Devarim 71:9).