For the sect of the Carmathians, consult Elmacin (Hist. Sara cen, p. 219, 224, 229, 231, 238, 241, 243), Abulpharagius (Dynast. p. 179 - 182), Abulfeda (Annal. Moslem. p. 218, 219, etc., 245, 265, 274) and D'Herbelot (Bibliotheque Orientale, p. 256 - 258, 635). I find some inconsistencies of theology and chronology, which it would not be easy nor of much importance to reconcile.