Shemot 9:7-9

Orthodox Jewish Bible

⁷ And Pharaoh sent, and, hinei, there was not one of the mikneh Yisroel dead. And the lev Pharaoh was hardened, and he did not let HaAm go.

⁸ And Hashem said unto Moshe and unto Aharon, Take to you handfuls of piach of the furnace, and let Moshe sprinkle it toward Shomayim in the sight of Pharaoh.

⁹ And it shall become fine dust in kol Eretz Mitzrayim, and shall be a sh’khin (boil) breaking forth with festers upon adam, and upon behemah, throughout kol Eretz Mitzrayim.