גמרא ערובין ס"ה.
אָמַר אַבָּיֵי אִי אָמְרָה לִי אֵם קָרֵיב כּוּתָּחָא לָא תְּנַאי.
Abaye said similarly that if my stepmother says to me: Bring me a dish of kutach, I can no longer study Torah in my usual fashion, as even a simple task such as this troubles me and distracts me from my Torah study.
