Bulugh al-Maram #1346
كتاب الجنايات
وَعَنْ عَائِشَةَ رَضِيَ اَللَّهُ عَنْهَا, عَنْ رَسُولِ اَللَّهِ - صلى الله عليه وسلم -قَالَ: «لَا يَحِلُّ قَتْلُ مُسْلِمٍ إِلَّا فِي إِحْدَى ثَلَاثِ خِصَالٍ: زَانٍ مُحْصَنٌ فَيُرْجَمُ, وَرَجُلٌ يَقْتُلُ مُسْلِمًا مُتَعَمِّدًا فَيُقْتَلُ, وَرَجُلٌ يَخْرُجُ مِنْ اَلْإِسْلَامِ فَيُحَارِبُ اَللَّهَ وَرَسُولَهُ, فَيُقْتَلُ, أَوْ يُصْلَبُ, أَوْ يُنْفَى مِنْ اَلْأَرْضِ.» رَوَاهُ أَبُو دَاوُدَ, وَالنَّسَائِيُّ, وَصَحَّحَهُ اَلْحَاكِمُ
'A’ishah (RAA) narrated that Allah’s Messenger (ﷺ) said:
“The blood of a Muslim is not to be shed except for three reasons: 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.