It was narrated from Abu Hurairah that the Messenger of Allah ﷺ said:
“The adulterer, at the time he is committing adultery, is not a believer; (the wine drinker) at the time he is drinking, is not a believer; the thief, at the time he is stealing, is not a believer; the plunderer, at the time he is plundering with the people looking on, is not a believer.”

حَدَّثَنَا عِيسَى بْنُ حَمَّادٍ، أَنْبَأَنَا اللَّيْثُ بْنُ سَعْدٍ، عَنْ عُقَيْلٍ، عَنِ ابْنِ شِهَابٍ، عَنْ أَبِي بَكْرِ بْنِ عَبْدِ الرَّحْمَنِ بْنِ الْحَارِثِ بْنِ هِشَامٍ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ " لاَ يَزْنِي الزَّانِي حِينَ يَزْنِي وَهُوَ مُؤْمِنٌ وَلاَ يَشْرَبُ الْخَمْرَ حِينَ يَشْرَبُهَا وَهُوَ مُؤْمِنٌ وَلاَ يَسْرِقُ السَّارِقُ حِينَ يَسْرِقُ وَهُوَ مُؤْمِنٌ وَلاَ يَنْتَهِبُ نُهْبَةً يَرْفَعُ النَّاسُ إِلَيْهِ أَبْصَارَهُمْ حِينَ يَنْتَهِبُهَا وَهُوَ مُؤْمِنٌ " .