One outspoken leader of the criticism against 'Uthman's regime was Abu Dharr...

One outspoken leader of the criticism against 'Uthman's regime was Abu Dharr, a fearless and uncompromising partisan of frugality and asceticism who violently protested against the accumulation of wealth in the hands of a few and demanded the distribution of lands among the community. 'Uthman, who did not like the idea of Abu Dharr thundering against the wealthy in the mosque of Medina, sent him to Syria.

Before long, the Caliph received a letter from Mu'awiya complaining of Abu Dharr's dangerous activities…