حَدَّثَنَا أَحْمَدُ بْنُ مُحَمَّدِ بْنِ حَنْبَلٍ، حَدَّثَنَا إِسْمَاعِيلُ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا أَيُّوبُ، عَنْ عِكْرِمَةَ، أَنَّ عَلِيًّا، عَلَيْهِ السَّلاَمُ أَحْرَقَ نَاسًا ارْتَدُّوا عَنِ الإِسْلاَمِ فَبَلَغَ ذَلِكَ ابْنَ عَبَّاسٍ فَقَالَ لَمْ أَكُنْ لأَحْرِقَهُمْ بِالنَّارِ إِنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ لاَ تُعَذِّبُوا بِعَذَابِ اللَّهِ ‏"‏ ‏.‏ وَكُنْتُ قَاتِلَهُمْ بِقَوْلِ رَسُولِ اللَّهِ صلى الله عليه وسلم فَإِنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ مَنْ بَدَّلَ دِينَهُ فَاقْتُلُوهُ ‏"‏ ‏.‏ فَبَلَغَ ذَلِكَ عَلِيًّا عَلَيْهِ السَّلاَمُ فَقَالَ وَيْحَ ابْنَ عَبَّاسٍ ‏.‏

Narrated Aisha, Ummul Mu'minin

The Messenger of Allah (ﷺ) 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.