(6) باب السَّارِقِ حِينَ يَسْرِقُ
Narrated Ibn `Abbas:
The Prophet (ﷺ) said, "When (a person) an adulterer commits illegal sexual intercourse then he is not a believer at the time he is doing it; and when somebody steals, then he is not a believer at the time he is stealing."
Reference: Sahih al-Bukhari 6782
In-book reference: Book 86, Hadith 11
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 8, Book 81, Hadith 773