Ikhw
n al-Muslim
n
(Muslim Brotherhood)
:
(Arab., ‘Brotherhood of Purity’). A secret movement founded
c.
951 (AH 340) in Iraq. It had strong
Ism
‘
l
connections and views, which were summarized in the fifty-one (or fifty-two) letters,
Ras
‘il ikhw
n al-
af
’
, which deal, in encyclopaedic fashion, with sciences, theology, metaphysics, cosmology, etc., showing their relation to each other.