Muslim religious order (
ar
qa
), mainly in Algeria, named after its founder Mu
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ammad b. ‘Abd al-Ra
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m
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n (d. 1793 (AH 1208)). Originally a missionary in India for another order (Khalwat
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), he received visions of the Prophet
Mu
ammad
, which prompted him to claim immunity from
hell
for those who adhered to him and his way.