Esther 5:14
14 Then his wife Zeresh and all his friends said to him, “Let a tgallows1 fifty cubits2 high be made, and in the morning tell the king to have Mordecai hanged upon it. Then go joyfully with the king to the feast.” This idea pleased Haman, and he had the gallows made.
Esther 7:9–10
9 Then hHarbona, one of the eunuchs in attendance on the king, said, “Moreover, the igallows1 that Haman has prepared for Mordecai, jwhose word saved the king, is standing at Haman’s house, fifty cubits2 high.” And the king said, “Hang him on that.” 10 So they hanged Haman on the gallows that he had prepared for Mordecai. Then the wrath of the king abated.