ויקרא ז׳:כ״ב-כ״ז

יעשה לכל מלאכה. בָּא וְלִמֵּד עַל הַחֵלֶב שֶׁאֵינוֹ מְטַמֵּא טֻמְאַת נְבֵלוֹת:

יעשה לכל מלאכה [AND THE FAT OF CARRION AND THE FAT OF THAT WHICH IS TORN] MAY BE USED IN ANY WORK — Scripture comes and teaches you with regard to חלב (the forbidden fat) of carrion that it does not acquire the “uncleanness of carrion” (‎‏טומאת נבלות), i.e. that whilst the flesh is unclean (cf. Leviticus 11:39) the fat (חלב) does not acquire this uncleanness (cf. Sifra, Tzav, Section 10 5; Pesachim 23a, b).

ואכל לא תאכלהו. אָמְרָה תּוֹרָה, יָבֹא אִסּוּר נְבֵלָה וּטְרֵפָה וְיָחוּל עַל אִסּוּר חֵלֶב, שֶׁאִם אֲכָלוֹ יִתְחַיֵּב אַף עַל לָאו שֶׁל נְבֵלָה, וְלֹא תֹּאמַר אֵין אִסּוּר חָל עַל אִסּוּר (זבחים ע'):

תאכלוה ‎לא ‎‏ ואכל[AND THE FAT OF CARRION … MAY BE USED IN ANY WORK] BUT YE SHALL IN NO WISE EAT OF IT — By these words it is not intended to forbid the eating of the חלב of a נבלה and טרפה because it is חלב for this has already been forbidden in Leviticus 3:17, but the Torah in effect says here: The prohibition of eating נבלה or טרפה shall come and fall upon (shall form an additional prohibition to) that of חלב — that if one eats it (the חלב of נבלה or of טרפה) he becomes liable to the punishment for transgressing the prohibition of נבלה also, (or of טרפה also), and you should not say: No prohibition can be super-imposed upon another prohibition already existing (Zevachim 70a).

בכל מושבתיכם. לְפִי שֶׁהִיא חוֹבַת הַגּוּף וְאֵינָהּ חוֹבַת קַרְקַע נוֹהֶגֶת בְּכָל מוֹשָׁבוֹת, וּבְמַסֶּכֶת קִדּוּשִׁין בְּפֶרֶק א' מְפֹרָשׁ לָמָּה הֻצְרַךְ לוֹמַר:

בכל מושבתיכם [YE SHALL EAT NO BLOOD …] IN ALL YOUR HABITATIONS — Since this is a personal duty (חובת הגוף) and not a duty depending upon Palestinian soil it applies wherever Israelites are settled). In Treatise Kiddushin, first chapter, (Kiddushin 37b) it is explained why it is necessary to use this term (i. e. to add ‎בכל משבתיכם).

לעוף ולבהמה. פְּרָט לְדַם דָּגִים וַחֲגָבִים (כריתות כ'):

לעוף ולבהמה ‎Excluded [from this prohibition is] the blood of fish and locusts.