"It is not permissible to kill a Muslim except in one of three cases: A adulterer who has been married, who is to be stoned; a man who kills a Muslim deliberately; and a man who leaves Islam and wages war against Allah, the Mighty and Sublime, and His Messenger, who is to be killed, crucified or banished from the land."

When the Prophet (saws) proceeded for the Battle of Badr, I said to him: Messenger of Allah allow me to accompany you in the battle. I shall act as a nurse for patients. It is possible that Allah might bestow martyrdom upon me. He said: Stay at your home. Allah, the Almighty , will bestow martyrdom upon you.

The narrator said: Hence she was called martyr. She read the Qur'an. She sought permission from the Prophet (saws) to have a mu'adhdhin in her house. He, therefore, permitted her (to do so).

She announced that her slave and slave-girl would be free after her death. One night they went to her and strangled her with a sheet of cloth until she died, and they ran away.

Next day Umar announced among the people, "Anyone who has knowledge about them, or has seen them, should bring them (to him)."

Umar (after their arrest) ordered (to crucify them) and they were crucified. This was the first crucifixion at Medina.

The Messenger of Allah [SAW] said: "It is not permissible to shed the blood of a Muslim except in three cases: An adulterer who had been married, who should be stoned to death; a man who killed another man intentionally, who should be killed; and a man who left Islam and waged war against Allah, the Might and Sublime, and His Messenger, who should be killed, or crucified, or banished from the land."

a married man who committed adultery, a man who kills another Muslim intentionally for which he must be killed (in Qisas or retaliation), and a man who abandons Islam and fights against Allah and His Messenger, in which case he should be either killed, crucified, or exiled.” Related by Abu Dawud and An-Nasa’i. Al-Hakim graded it as Sahih.

The Messenger of Allah (saws) Said: The blood of a Muslim man who testifies that there is no god but Allah and that Muhammad is Allah's Apostle should not lawfully be shed except only for one of three reasons: a man who committed fornication after marriage, in which case he should be stoned; one who goes forth to fight with Allah and His Apostle, in which case he should be killed or crucified or exiled from the land; or one who commits murder for which he is killed.

fornication after marriage, in which case he should be stoned; one who goes forth to fight with God and His Messenger,* in which case he should be killed, or crucified, or made a fugitive; or one which commits murder for which he is killed.” Abu Dawud transmitted it. * Mirqat iv. 53 refers this to such things as highway robbery.

Some people from 'Uraynah came to the Messenger of Allah [SAW], but the climate of Al-Madinah did not suit them. The Prophet [SAW] sent them to some camels of his, and he drank some of their milk and urine. When they recovered, they apostatized from Islam and killed the herdsman of the Messenger of Allah [SAW], who was a believer, and drove the camels off. The Messenger of Allah [SAW] sent (men) after them, and they were caught. He had their hands and feet cut off, their eyes gouged out, and had them crucified.