ואכלת ושבעת - סימן טוב לאדם, כשבהמתו אוכלת ושובעת. וכן הוא אומר (משלי יב) יודע צדיק נפש בהמתו.
"and you will eat and be sated": It is a good sign for a man when his beast eats and is stated, viz. (Proverbs 12:10) "The righteous one knows the spirit of his beast."
תָּנוּ רַבָּנַן שְׁלֹשָׁה שׂוֹנְאִין זֶה אֶת זֶה אֵלּוּ הֵן הַכְּלָבִים וְהַתַּרְנְגוֹלִין וְהַחַבָּרִין וְיֵשׁ אוֹמְרִים אַף הַזּוֹנוֹת וְיֵשׁ אוֹמְרִים אַף תַּלְמִידֵי חֲכָמִים שֶׁבְּבָבֶל
Furthermore, the Sages taught: Members of three groups hate other members of the same group: Dogs, roosters, and the Persian priests. And some say: Also prostitutes. And some say: Also Torah scholars in Babylonia.
אָמְרִי לֵיהּ לִיטְעוֹם מָר מִידֵּי אֲמַר לְהוּ הָכִי אָמַר רַב יְהוּדָה אָמַר רַב אָסוּר לוֹ לְאָדָם שֶׁיִּטְעוֹם כְּלוּם עַד שֶׁיִּתֵּן מַאֲכָל לִבְהֶמְתּוֹ שֶׁנֶּאֱמַר וְנָתַתִּי עֵשֶׂב בְּשָׂדְךָ לִבְהֶמְתֶּךָ וַהֲדַר וְאָכַלְתָּ וְשָׂבָעְתָּ
Rav Huna and Rav Ḥisda said to Geneiva: Does the Master wish to taste something? Geneiva said to them: So says Rav Yehuda that Rav says: It is prohibited for a person to taste anything until he gives food to his animal, as it is stated in the verse: “And I will give grass in the field for your animals” (Deuteronomy 11:15), and only afterward is it written in that verse: “And you shall eat and be satisfied.” I have yet to feed my animal, so I may not eat.