| Ideally, one would like to be able to check such accounts against contemporary evidence | Seeing Islam as others saw it: a survey and evaluation of Christian, Jewish, Robert G |
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| Peter Teed 1992 , p |
These sources contain internal complexities, anachronisms, discrepancies, and contradictions.
| The Bustan al-Ukul, by Nathanael ibn al-Fayyumi, edited and translated by David Levine, Columbia University Oriental Studies Vol | |
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| Kafih Jerusalem, 1984 , ch | Lapidus 2002 , pp 0 |
597, which notes that many of the details surrounding Muhammad's life as given in the biographies, are "problematic in certain respects, the most important of which is that they represent a tradition of living narrative that is likely to have developed orally for a considerable period before it was given even a relatively fixed written form.
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