An Nasai

"No one who commits Zina is a believer at the moment when he is committing Zina; no one who steals is a believe at the moment when he is stealing; no one who drinks wine is a believer at the moment when he is drinking it; and no robber is a believer at the moment when he is robbing and the people are looking on.

"The Messenger of Allah said: 'No one who commits Zina is a believer at the moment when he is committing Zina; no one who steals is a believer at the moment when he is stealing; no one who drinks wine is a believer at the moment when he is drinking it; but repentance is available to him after that.

"No one who commits Zina is a believer at the moment when he is committing Zina; no one who steals is a believer at the moment when he is stealing; no one who drinks wine is a believer at the moment when he is drinking it." - And he mentioned a fourth but I (the narrator) have forgotten it - "When he does that the yoke of Islam is shed from his neck, but if he repents, Allah accepts his repentance."

"The Messenger of Allah said; 'Allah curses the thief who steals an egg and had his hand cut off, and who steals a rope and has his hand cut off."

a group of the Kala'iyin complaned to him about some people who had stolen some goods, shoe detained them for several days, and then he let them go. They came and said: "You let them go without any pressure (to make them admit to their crime) or beating?" An-Nu'man said: "What do you want? If you wish, I will beat them, and if Allah brings back your goods thereby, all well and good. Otherwise I will take retaliation from your backs (by beating you) likewise." They said: "is this your ruling?" He said: "This is the ruling of Allah and His Messenger "

the Messenger of Allah detained some people who were under suspicion

the Messenger of Allah detained a man who was under suspicion, and then he let him go.