Daniel 3:22

3:22 But since the king’s command was so urgent, and the furnace was so excessively hot, the men who escorted Shadrach, Meshach, and Abednego were killed by the leaping flames.

Daniel 6:17

6:17 Then a stone was brought and placed over the opening to the den. The king sealed it with his signet ring and with those of his nobles so that nothing could be changed with regard to Daniel.