Exodus Chapter 9, Verse 8
From BibleWiki
8: And the LORD said unto Moses and unto Aaron, Take to you
handfuls of ashes of the furnace, and let Moses sprinkle it
toward the heaven in the sight of Pharaoh.
8: And the Lord said to Moses and Aaron: Take to you handfuls of ashes
out of the chimney, and let Moses sprinkle it in the air in the presence
of Pharao.
8: And the Lord spoke to Moses and Aaron, saying, Take you handfuls of ashes of the furnace, and let Moses scatter it toward heaven before Pharao, and before his servants.
Exodus Chapter 9, Verse 8/commentary

