Appears 4 times in the Quran. (Root: دبر)
  1. So the roots of the people who were unjust were cut off; and all praise is due to Allah, the Lord of the worlds.

  2. So We delivered him and those with him by mercy from Us, and We cut off the last of those who rejected Our communications and were not believers.

  3. And when Allah promised you one of the two parties that it shall be yours and you loved that the one not armed should he yours and Allah desired to manifest the truth of what was true by His words and to cut off the root of the unbelievers.

  4. And We revealed to him this decree, that the roots of these shall be cut off in the morning.