Muhammad bin Salmah محمد بن سلمة بن عبد الله الباهلي · The Book of Fighting [The Prohibition of Bloodshed]

"The Messenger of Allah said: 'I have been commanded to fight the people until they say La ilaha illallah. If they say it, then their blood and wealth are prohibited for me, except for a right that is due, and their reckoning will be with Allah, the Mighty and Sublime."

Some people from 'Ukl came to the Prophet sent (men) after them, and they were brought to him. He had their hands and feet cut off, and their eyes gouged out, and he did not have (their wounds) cauterized, and he left them to die. Then Allah, the Mighty and Sublime, revealed: "The recompense of those who wage war against Allah and His Messenger."