וַיִּקְח֞וּ אֶת־פִּ֣יחַ הַכִּבְשָׁ֗ן וַיַּֽעַמְדוּ֙ לִפְנֵ֣י פַרְעֹ֔ה וַיִּזְרֹ֥ק אֹת֛וֹ מֹשֶׁ֖ה הַשָּׁמָ֑יְמָה וַיְהִ֗י שְׁחִין֙ אֲבַעְבֻּעֹ֔ת פֹּרֵ֕חַ בָּאָדָ֖ם וּבַבְּהֵמָֽה׃
E eles tomaram a cinza da fornalha, e se puseram diante de Paroh, e Moshe a lançou ao céu, e houve úlceras que brotavam em pústulas nos homens e nos animais.
Mishnah Pesachim
The pesah which comes in impurity: zavin and zavot, menstruant women and women after childbirth do not eat from it, yet if they did eat they are exempt from karet. Rabbi Eliezer exempts [them] even [of the karet normally incurred] for entering the sanctuary.