وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «لَا يَزْنِي الزَّانِي حِينَ يَزْنِي وَهُوَ مُؤْمِنٌ وَلَا يشرب الْخمر حِين يشْربهَا وَهُوَ مُؤمن وَلَا يَسْرِقُ السَّارِقُ حِينَ يَسْرِقُ وَهُوَ مُؤْمِنٌ وَلَا ينتهب نهبة ذَات شرف يرفع النَّاس إِلَيْهِ أَبْصَارهم فِيهَا حِينَ يَنْتَهِبُهَا وَهُوَ مُؤْمِنٌ وَلَا يَغُلُّ أَحَدُكُمْ حِين يغل وَهُوَ مُؤمن فإياكم إيَّاكُمْ» وَفِي رِوَايَة ابْن عَبَّاس: «وَلَا يَقْتُلُ حِينَ يَقْتُلُ وَهُوَ مُؤْمِنٌ» . قَالَ عِكْرِمَةُ: قُلْتُ لِابْنِ عَبَّاسٍ: كَيْفَ يُنْزَعُ الْإِيمَانُ مِنْهُ؟ قَالَ: هَكَذَا وَشَبَّكَ بَيْنَ أَصَابِعِهِ ثُمَّ أَخْرَجَهَا فَإِنْ تَابَ عَادَ إِلَيْهِ هَكَذَا وَشَبَّكَ بَيْنَ أَصَابِعِهِ وَقَالَ أَبُو عَبْدِ اللَّهِ: لَا يَكُونُ هَذَا مُؤْمِنًا تَامًّا وَلَا يَكُونُ لَهُ نُورُ الْإِيمَان. هَذَا لفظ البُخَارِيّ

He also reported God’s messenger as saying, “When one commits fornication he is not a believer, when one steals he is not a believer, when one drinks wine he is not a believer, when one takes plunder on account of which men raise their eyes at him he is not a believer, and when one of you defrauds he is not a believer; so beware, beware!" (Bukhari and Muslim.) The version of Ibn ‘Abbas contains “When one commits murder he is not a believer.” ‘Ikrima said that he asked Ibn 'Abbas how faith could be snatched away from him, and he replied “Thus (interlacing his fingers and then separating them), but if he repents, it will return to him thus,” and he interlaced his fingers. Aba ‘Abdallah1 said that such a one is not a perfect believer and does not possess the light of faith. This is Bukhari's wording. 1 i.e. ‘Ikrima, Abu Abdullah being his kunya.