וַיֹּ֨אמֶר עֵשָׂ֜ו אֶֽל־יַעֲקֹ֗ב הַלְעִיטֵ֤נִי נָא֙ מִן־הָאָדֹ֤ם הָאָדֹם֙ הַזֶּ֔ה כִּ֥י עָיֵ֖ף אָנֹ֑כִי עַל־כֵּ֥ן קָרָֽא־שְׁמ֖וֹ אֱדֽוֹם׃
Исав сказал Иакову: 'Позволь мне проглотить, я прошу тебя, этот красный, красный горшок; ибо я слабый.' Поэтому его звали Эдом.
Rashi
הלעיטני LET ME SWALLOW — I will open my mouth and you pour a lot in. The word is really used of feeding animals as we find the word in the Mishna, (Shabbat 155b) “One may not fatten up a camel on the Sabbath but one may put food (מלעיטין) into its mouth. ”
Chizkuni
מן האדום האדום “from this reddish looking stuff.” Every time we encounter the adjective “red,” it always appears to be repeated. The author quotes as examples: אדמדם, ירקרק in Leviticus 13,19 and 49 .(Rash’bam). When someone requests something urgently, he is always in the habit of repeating the key words in such a request. Esau, on that occasion, was extremely in need of food and drink.
Da'at Zekenim
הלעיטני נא....על כן קרא שמו אדום, “please let me swallow some of this red stuff.... this is why henceforth he is called Edom.” According to the plain meaning of the verse,-i.e. when read superficially,- his name now became associated with his having referred to the stew Yaakov was cooking as “red stuff.” He was referring to a few lentils. We are told this, as from now on Esau called himself “the red one,” whereas at birth only other people called him thus on account of the colour of his skin.