Exodus 9:9

וַיִּשְׁלַח פַּרְעֹה וְהִנֵּה לֹא־מֵת מִמִּקְנֵה יִשְׂרָאֵל עַד־אֶחָד וַיִּכְבַּד לֵב פַּרְעֹה וְלֹא שִׁלַּח אֶת־הָעָֽם

And Pharaoh sent, and, behold, there was not so much as one of the cattle of the Israelites dead. But the heart of Pharaoh was stubborn, and he did not let the people go.

וַיֹּאמֶר יְהוָה אֶל־מֹשֶׁה וְאֶֽל־אַהֲרֹן קְחוּ לָכֶם מְלֹא חָפְנֵיכֶם פִּיחַ כִּבְשָׁן וּזְרָקוֹ מֹשֶׁה הַשָּׁמַיְמָה לְעֵינֵי פַרְעֹֽה

And the LORD said unto Moses and unto Aaron: ‘Take to you handfuls of soot of the furnace, and let Moses throw it heavenward in the sight of Pharaoh.

וַיִּקְחוּ אֶת־פִּיחַ הַכִּבְשָׁן וַיַּֽעַמְדוּ לִפְנֵי פַרְעֹה וַיִּזְרֹק אֹתוֹ מֹשֶׁה הַשָּׁמָיְמָה וַיְהִי שְׁחִין אֲבַעְבֻּעֹת פֹּרֵחַ בָּאָדָם וּבַבְּהֵמָֽה

And they took soot of the furnace, and stood before Pharaoh; and Moses threw it up heavenward; and it became a boil breaking forth with blains upon man and upon beast.

וְלֹֽא־יָכְלוּ הַֽחַרְטֻמִּים לַעֲמֹד לִפְנֵי מֹשֶׁה מִפְּנֵי הַשְּׁחִין כִּֽי־הָיָה הַשְּׁחִין בַּֽחֲרְטֻמִּם וּבְכָל־מִצְרָֽיִם

And the magicians could not stand before Moses because of the boils; for the boils were upon the magicians, and upon all the Egyptians.