| Source |
|---|
| Gerhard Bowering, Patricia Crone, Wadad Kadi, Devin J. Stewart, Muhammad Qasim Zaman (ed.) The Princeton Encyclopedia of Islamic Political Thought pp. 376-377 (2012) |
This publication requires registered and/or paid access
| Source |
|---|
| Gerhard Bowering, Patricia Crone, Wadad Kadi, Devin J. Stewart, Muhammad Qasim Zaman (ed.) The Princeton Encyclopedia of Islamic Political Thought pp. 376-377 (2012) |
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