Moulavi Gerágh Ali, A Critical Exposition of the Popular 'Jihád'…
“ During the sovereignty of Omar, the second Khalif, in accordance with the injunctions of Mohammad to abolish slavery, all the existing Arab slaves were set free. It will appear that the wishes of Mohammad to that effect were but partially carried out. In ages that succeeded the death of Mohammad, they were altogether lost sight of, and even Arabs were allowed to be enslaved by the later jurists. ”
