(42) باب ذِكْرِ الرِّوَايَاتِ الْمُغَلِّظَاتِ فِي شُرْبِ الْخَمْرِ
It was narrated that Abu Hurairah said:
"The Messenger of Allah [SAW] said: 'The adulterer is not a believer at the moment when he is committing adultery, and the wine drinker is not a believer at the moment when he is drinking wine, and the thief is not a believer at the moment when he is stealing, and the robber is not a believer at the moment when he is robbing and people are looking on.'"
Reference: Sunan an-Nasa'i 5659
In-book reference: Book 51, Hadith 121
English translation: Vol. 6, Book 51, Hadith 5662