וַיֹּ֣אמֶר יְהוָה֮ אֶל־מֹשֶׁ֣ה וְאֶֽל־אַהֲרֹן֒ קְח֤וּ לָכֶם֙ מְלֹ֣א חָפְנֵיכֶ֔ם פִּ֖יחַ כִּבְשָׁ֑ן וּזְרָק֥וֹ מֹשֶׁ֛ה הַשָּׁמַ֖יְמָה לְעֵינֵ֥י 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.
Find Mishnaic references to Exodus 9:8: , passages from the 63 tractates of the Mishnah.