What did the Prophet Muhammad (saw) say about illegal activities and the faith of a person who has committed them?
      Narrated 'Ikrima from Ibn 'Abbas:                          Allah's Apostles said, "When a slave (of Allah) commits illegal sexual     intercourse, he is not a believer at the time of committing it; and if     he steals, he is not a believer at the time of stealing; and if he      drinks an alcoholic drink, when he is not a believer at the time of      drinking it; and he is not a believer when he commits a murder,"      'Ikrima said: I asked Ibn Abbas, "How is faith taken away from him?"      He said, Like this," by clasping his hands and then separating them,      and added, "But if he repents, faith returns to him like this, by      clasping his hands again.