Abu Bakrah Nufaī‘ ibn al-Hārith Ath-Thaqafi (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "When two Muslims meet to fight each other with their swords, both the killer and the killed are doomed to Hell." I said: "O Messenger of Allah, that is the case with the killer, but what about the one killed?" He replied: "Indeed, he was keen to kill his companion."
‘Abdullāh ibn Mas'ud (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "The blood of a Muslim is inviolable except by one of three: adultery by a married person, a life for a life (homicide), and abandoning Islam and separating from the Islamic body.''
‘Abdullāh ibn Mas‘ūd (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "No soul gets killed wrongfully without the first son of Adam taking guilt for its blood because he was the first to institute the practice of murder."
‘Abdullāh ibn Mas‘ūd (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "The first cases to be settled among people on the Day of Judgment will be the cases of blood (homicide)."
3227 - (ق) عَنْ أَنَسِ بْنِ مالِكٍ قَالَ: عَدَا يَهُودِيٌّ في عَهْدِ رَسُولِ اللهِ صلّى الله عليه وسلّم عَلَى جارِيةٍ، فَأَخَذَ أَوْضاحاً
[1]
كانَتْ عَلَيْهَا، وَرَضَخَ رَأْسَهَا
[2]
، فَأَتَى بِهَا أَهْلُهَا رَسُولَ اللهِ صلّى الله عليه وسلّم وَهْيَ في آخِرِ رَمَقٍ
[3]
وَقَدْ أُصْمِتَتْ، فَقَالَ لَهَا رَسُولُ اللهِ صلّى الله عليه وسلّم: (مَنْ قَتَلَكِ؟ فُلانٌ) ؟ لِغَيْرِ الَّذِي قَتَلَهَا، فَأَشَارَتْ بِرَأْسِهَا: أَنْ لاَ، قَالَ: فَقَالَ لِرَجُلٍ آخَرَ غَيْرِ الَّذِي قَتَلَهَا، فَأَشَارَتْ: أَنْ لاَ، فَقَالَ: (فَفُلاَنٌ) ؟ لِقَاتِلِهَا، فَأَشَارَتْ: أَنْ نَعَمْ، فَأَمَرَ بِهِ رَسُولُ اللهِ صلّى الله عليه وسلّم فَرُضِخَ رَأْسُهُ بَيْنَ حَجَرَيْنِ.
Anas ibn Mālik (may Allah be pleased with him) reported: A girl was found with her head crushed between two stones. They asked her: "Who did that to you? Is it so-and-so, or so-and-so?" They kept mentioning names until they mentioned the name of a Jew, whereupon she nodded her head. The Jew was captured, and he confessed. Thereupon, the Messenger of Allah (may Allah's peace and blessings be upon him) ordered that his head be crushed between two stones. In another narration by Muslim and An-Nasā'i: "A Jew killed a girl for her jewelry, so the Messenger of Allah (may Allah's peace and blessings be upon him) killed him in retaliation for her."