Esther 7:9-10

Then Harbona, one of the eunuchs in attendance on the king, said, “Moreover, the gallows that Haman has prepared for Mordecai, whose word saved the king, is standing at Haman’s house, fifty cubits high.” And the king said, “Hang him on that.” So they hanged Haman on the gallows that he had prepared for Mordecai. Then the wrath of the king abated.