Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Prophet Muhammad (peace and blessings be upon him) said: "A thief is not a believer while he is stealing, an adulterer is not a believer while he is committing adultery, and a person who drinks alcohol is not a believer while he is drinking alcohol. By the One in whose hand is the soul of Muhammad, whoever snatches something openly in front of people is not a believer while snatching it, and no one is a believer while killing someone. So you all should strive to avoid (all) these acts, strive to avoid them."