In his book History of the Caliphs, Professor Muhammad Khizri Bek has expressed the view that all the allegations that were levied against Uthman were frivolous, and were with regard to matters which vested in the authority of Uthman, and with regard to which he was competent to act in his discretion. The main charge against him was about the behalf. Islam authorized and those Holy Prophet made no restrictions in that behalf. Islam enjoined equality, and Uthman was free to choose any one from among his relatives for any appointment if he considered him fit for such appointment. Professor Khizri has expressed the view that in Shariah the demand for the deposition of the Caliph was not authorized and those who raised the demand betrayed Islam.