"A man came to the Messenger of Allah and said: 'O Messenger of Allah, what do you think if someone comes to steal my wealth?' He said: 'Urge him by Allah.' He said: 'What if he persists?' He said: 'Urge him by Allah.' He said: 'What if he persists?' He said: 'Urge him by Allah.' He said: 'What if he persists?' He said: 'Then fight. If you are killed you will be in Paradise, and if you kill him, he will be in the Fire.'"
Sunan an-Nasa'i Book 37, Hadith 117