Identify the Muslim ruler who introduced jail system for detention of prisoners.

  • (A) Hazrat Abu Bakr (May Allah bless him)
  • (B) hazrat Umer (May Allah bless him)
  • (C) Hazrat Umer bin Abdul Aziz (May Allah bless him)
  • (D) Walid bin Abdul Malik (May Allah bless him);
Correct Answer: B

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