What were the three phases that Amr b. al-As experienced before pledging allegiance to the Prophet Muhammad (saw)?
 It is narrated on the authority of Ibn Shamasa Mahri that he said:                      We went to Amr b. al-As and he was about to die. He wept for a long time and turned his face towards the wall. His son said: Did the Messenger of Allah (may peace be upon him not give you tidings of this? Did the Messenger of Allah (may peace be upon him) not give you tidings of this? He (the narrator) said: He turned his face (towards the audience) and said: The best thing which we can count upon is the testimony that there is no god but Allah and that Muhammad is the Apostle of Allah. Verily I have passed through three phases. (The first one) in which I found myself averse to none else more than I was averse to the Messenger of Allah (may peace be upon him) and there was no other desire stronger in me than the one that I should overpower him and kill him. Had I died in this state, I would have been definitely one of the denizens of Fire. When Allah instilled the love of Islam in my heart, I came to the Apostle (may peace be upon him) and said: Stretch out your right hand so that may pledge my allegiance to you. He stretched out his right hand, I withdrew my hand, He (the Holy Prophet) said: What has happened to you, O 'Amr? replied: I intend to lay down some condition. He asked: What condition do you intend to put forward? I said: should be granted pardon. He (the Holy Prophet) observed: Are you not aware of the fact that Islam wipes out all the previous (misdeeds)? Verily migration wipes out all the previous (misdeeds), and verily the pilgrimage wipes out all the (previous) misdeeds. And then no one as or dear to me than the Messenger of Allah and none was more sublime in my eyes than he, Never could I, pluck courage to catch a full glimpse of his face due to its splendour. So if I am asked to describe his features, I cannot do that for I have not eyed him fully. Had I died in this state had every reason to hope that I would have bee among the dwellers of Paradise. Then we were responsible for certain things (in the light of which) I am unable to know what is in store for me. When I die, let neither female mourner nor fire accompany me. When you bury me, fill my grave well with earth, then stand around it for the time within which a camel is slaughtered and its meat is distributed so that I may enjoy your intimacy and (in your company) ascertain what answer I can give to the messengers (angels) of Allah.