And the Prophet Muhammad (peace and blessings be upon him) said: At the moment when a person steals, he is not a believer; at the moment when a person drinks alcohol, he is not a believer; and at the moment when a person commits adultery, he is not a believer. By the One in whose hand is the life of Muhammad (peace and blessings be upon him), none of you is a believer at the time when he seizes a valuable thing to which people raise their eyes, and none of you is a believer at the time when he commits treachery. Therefore, protect yourselves from these things.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 8202
Hadith Gradingحکم دارالسلام:إسناده صحيح، خ: 2475، م: 57، وقوله: « فإياكم إياكم » من قول أبي هريرة