משנה: שֵׂיאוּר יִשָּרֵף וְהָאוֹכְלוֹ פָּטוּר. סִידּוּק יִשָּׂרֵף וְהָאוֹכְלוֹ חַיָיב כָּרֵת. אֵיזֶהוּ שֵׂיאוּר כְּקַרְנֵי חֲגָבִים. סִידּוּק שֶׁנִּתְעָרְבוּ סְדָקָיו זֶה בָזֶה דִּבְרֵי רִבִּי יְהוּדָה. וַחֲכָמִים אוֹמְרִים זֶה וָזֶה הָאוֹכְלוֹ חַיָיב כָּרֵת. אֵי זֶהוּ שֵׂיאוּר כָּל שֶׁהִכְסִיפוּ פָנָיו כְּאָדָם שֶׁעָמְדוּ שַׂעֲרוֹתָיו:
MISHNAH: Sour dough is to be burned but a person who eats it is not liable; cracked dough is to be burned and a person who eats it is liable for extirpation. What is sour dough? Like locusts’ antlers; cracked if its fissures joined one another, the words of Rebbi Jehudah, but the Sages say, in both cases one who eats it is liable. What is sour dough? Any which is pale like a man whose hair is standing up.