I am dusted with the dust of their feet.
In the question: "Beware of them and be destroyed in their presence. Seek their closeness in every way." (According to the interpretation of Rabbi Obadiah from Bartenoura to Mishnah, in the old days the teacher would sit on a chair and his students would sit on the floor at his feet, and therefore there would be dust in his proximity.)
("Your house will be a house of promise to the wise, and you will be dusted with the dust of their feet, and you will be drinkable in their thirst with their words" - Avot 1:4)
Translation
Expression (Hebrew)
הֱוֵי מִתְאַבֵּק בַּעֲפַר רַגְלֵיהֶם
Definition (Hebrew)
בְּהַשְׁאָלָה: לָמַד מֵהֶם וְתִתְבַּטֵּל בִּפְנֵיהֶם.תְּחַפֵּשׂ אֶת קִרְבָתָם בְּכָל מְחִיר (ע"פ פֵּרוּשׁ ר' עוֹבַדְיָה מִבַּרְטֵנוּרָה לַמִּשְׁנָה, בִּימֵי קֶדֶם הָיָה הַמְּלַמֵּד יוֹשֵׁב עַל כִּסֵּא וְתַלְמִידָיו יָשְׁבוּ עַל הַקַּרְקַע לְרַגְלָיו וְלָכֵן הָיָה אָבָק בְּקִרְבָתוֹ).
("יְהִי בֵּיתְךָ בֵּית וַעַד לַחֲכָמִים וֶהֱוֵי מִתְאַבֵּק בַּעֲפַר רַגְלֵיהֶם וֶהֱוֵי שׁוֹתֶה בְצָמָא אֶת דִּבְרֵיהֶם"- אָבוֹת א ד)