Islamic Studies
Caliphate & Rulers: From the Rightly Guided Caliphs to the Ottoman Caliphate
Which Umayyad Caliph is called the 'Fifth Rightly Guided Caliph'?
Explanation
Umar bin Abdul Aziz (99–101 AH) is called the 'Fifth Rightly Guided Caliph' due to his extraordinary justice, fairness and simple lifestyle.
Reference: Islamic Studies - Caliphate & Rulers
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