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- Rasāʼil (Ikhwān al-Ṣafāʼ)1
- Recitations14
- Religious life1
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- Resurrection (Islam)3
- Riddles, Persian2
- Rifāʻī, Aḥmad ibn ʻAlī, 1106?-11821
- Rifāʻīyah1
- Russia (Federation)--Saint Petersburg1
- Salat2
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