Note 440 — Chapter XXX · CALIPHATE OF OTHMAN. GENERAL REVIEW. A.H. XXIV.-XXXV. A.D. 645–656.
Reading edition
From this point begin the rough waters of the great cataclysm. Tradition becomes deeply affected by faction, especially the envenomed shafts of the party of Aly and the Abbassides, under cover of which they built up their pretensions, and, in the end, succeeded in supplanting the Omeyyad dynasty. The evidence, therefore, must be received with caution as we go along.