'Amr b. Shu'aib, on his father’s authority, said his grandfather reported God’s Messenger as saying, “If anyone kills a man deliberately he is to be handed over to the relatives of the one who has been killed. If they wish they may kill him, but if they wish they may accept blood wit, which is thirty she-camels in their fourth year, thirty in their fifth year, and forty pregnant she-camels. Any arrangement they make with him is for them to decide.”
Al-Hasan, on Samura’s authority, quoted God’s Messenger as saying, “If anyone kills his slave we will kill him, and if anyone maims his slave we will maim him.”
Tirmidhi, Abu Dawud, Ibn Majah and Darimi transmitted it, and Nasa’i added in another version, “If anyone castrates his slave we will castrate him.”
‘Ali reported the Prophet as saying, “The lives of all Muslims are equal; the lowliest of them can guarantee their protection, the most distant can keep others from breaking protection he has given,* and they are one band against others. A Muslim must not be killed for an infidel, nor must one who has been given a covenant be killed while his covenant holds.”
Abu Dawud and Nasa’i transmitted it, and Ibn Majah transmitted it on the authority of Ibn ‘Abbas.
* The interpretation which seems to be preferred is that no matter how far one may live from the land of infidels, any protection one may guarantee to an infidel must be respected by all Muslims. Another possible explanation is that when a detachment is sent ahead into infidel country those who remain behind them are entitled to their portion of any spoil they take, but it is felt that this meaning does not suit the context. The Arabic words are wa-yaruddu 'alaihim aqsahum.
‘Amr b. Shu'aib, on his father’s authority, said his grandfather told that Suraqa b. Malik said he was present when God's Messenger allowed a father to take retaliation on his son, but did not allow a son to take retaliation on his father.
