Ali ibn al-Hussein (a) narrated: Amir ul-Mu'minin (a) went for facing the three individuals who had sworn by Lat and Uzza and took upon themselves the pledge of killing the Prophet (s)… He could kill one and capture the others. When he carried out the Prophet’s order of advancing one of them before him, the Prophet (s) asked him to declare that there is no god but Allah and that he is His messenger.
The man answered: “To move the unshakable Mount Abu Qubays is easier for me than uttering this statement ." Hence, the Prophet (s) asked Amir ul-Mu'minin (a) to behead him. The same thing was said to the other man whose answer was, “attach me to the previous." The Prophet (s), also, asked Amir ul-Mu'minin (a) to attach him to the previous. In this very time , the Archangel Gabriel descended and said to the Prophet (s): “Mohammed, your Lord sends His salaams to you and asks you not to kill this one, because he was well-mannered and openhanded with his people." The Prophet (s) shouted at Amir ul-Mu'minin: “Al i, stop it. The messenger of my Lord has just told me that this man was well-mannered and openhanded with his people." As he heard the Prophet’s statement, the man who was under the edge of the sword wondered: “Was it the messenger of your Lord who told you of this?" The Prophet (s) said: “Yes, it was."
The man said: “By God I swear, I have never possessed a single dirham while a brother of mine does not have it. I also have never frowned my face in warfare. I now declare that there is no god but Allah and you are surely the messenger of God." The Prop het (s) commented: “This is a man whose moral conduct and openhandedness have drawn him to the gardens of bliss." ( Bihar ul-Anwar; vol. 15 part 2 p. 210 )