| Bandar Salman Al Saud 1997 | Adolf Grohmann, Arabia Volume 3, Issue 1, Part 3 p |
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| Eleanor Abdella Doumato January 2000 | Ibn Ishaq Sirat Rasul Allah, pp |
| : , The Journal of Scriptural Reasoning, 2009 8 1 | Cambridge, England, UK: Cambridge University Press, 2002 |
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| Rank and file Ikhwan fighters formed units in a new military institution, initially the White Army, eventually the National Guard |
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