It was narrated that Ibn 'Abbas said: "The Messenger of Allah (ﷺ) said: 'No one who commits Zina is a believer at the moment when he is committing Zina, and no one who drinks wine is a believer at the moment when he is drinking it, and no thief is a believer at the moment when he is stealing, and no killer is a believer at the moment he is killing
Source: sunnah.com
Other translations
Arabic
أَخْبَرَنَا عَبْدُ الرَّحْمَنِ بْنُ مُحَمَّدِ بْنِ سَلاَّمٍ، قَالَ حَدَّثَنَا إِسْحَاقُ الأَزْرَقُ، عَنِ الْفُضَيْلِ بْنِ غَزْوَانَ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ يَزْنِي الْعَبْدُ حِينَ يَزْنِي وَهُوَ مُؤْمِنٌ وَلاَ يَشْرَبُ الْخَمْرَ حِينَ يَشْرَبُهَا وَهُوَ مُؤْمِنٌ وَلاَ يَسْرِقُ وَهُوَ مُؤْمِنٌ وَلاَ يَقْتُلُ وَهُوَ مُؤْمِنٌ " .
sunnah.com