It was narrated from 'Amr Bin Shu'aib, from his father, that his grandfather said: The Messenger of Allah said: 'The blood money for Ahl Adh-Dhimmah is half that of the blood money for the Muslims, and they are the Jews and Christians.
It was narrated from 'Amr bin Shu'aib, from his father, from 'Abdullah bin 'Amr, that the Messenger of Allah said: The blood money for a disbeliever is half the blood money for the believer. (Hassan)