(3NdGaI CHi HcQ GdUOjb (B/s - (3HGSdGeg, MSjf GHf YHO Gddgs (Jiddah : Mamlakah al-'Arabiyah al-Sa'udiyah, 1983)
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Keywords: Abu Bakr, -- Caliph, -- d. 634; Caliphs