Sura 2:178, 216 — Muhammad

[2.178] Believers, retaliation is decreed for you in bloodshed: a free man for a free man, a slave for a slave, and a female for a female. He who is pardoned by his aggrieved brother shall be prosecuted according to usage and shall pay him a liberal fine. This is a merciful dispensation from your Lord. He that transgresses thereafter shall be sternly punished.

[2.216] Fighting is obligatory for you, much as you dislike it. But you may hate a thing although it is good for you, and love a thing althought it is bad for you. God knows, but you know not.

From N. J. Dawood, The Koran (London: Penguin Books, 2003), page 27, 32.