Narrated Abu Jamra: Ibn `Abbas said to us, "Shall I tell you the story of Abu Dhar's conversion to Islam?" We said, "Yes." He said, "Abu Dhar said: I was a man from the tribe of Ghifar. We heard that a man had appeared in Mecca, claiming to be a Prophet. ! said to my brother, 'Go to that man and talk to him and bring me his news.' He set out, met him and returned. I asked him, 'What is the news with you?' He said, 'By Allah, I saw a man enjoining what is good and forbidding what is evil.' I said to him, 'You have not satisfied me with this little information.' So, I took a waterskin and a stick and proceeded towards Mecca. Neither did I know him (i.e. the Prophet ), nor did I like to ask anyone about him. I Kept on drinking Zam zam water and staying in the Mosque. Then `Ali passed by me and said, 'It seems you are a stranger?' I said, 'Yes.' He proceeded to his house and I accompanied him. Neither did he ask me anything, nor did I tell him anything. Next morning I went to the Mosque to ask about the Prophet but no-one told me anything about him. `Ali passed by me again and asked, 'Hasn't the man recognized his dwelling place yet' I said, 'No.' He said, 'Come along with me.' He asked me, 'What is your business? What has brought you to this town?' I said to him, 'If you keep my secret, I will tell you.' He said, 'I will do,' I said to him, 'We have heard that a person has appeared here, claiming to be a Prophet. I sent my brother to speak to him and when he returned, he did not bring a satisfactory report; so I thought of meeting him personally.' `Ali said (to Abu Dhar), 'You have reached your goal; I am going to him just now, so follow me, and wherever I enter, enter after me. If I should see someone who may cause you trouble, I will stand near a wall pretending to mend my shoes (as a warning), and you should go away then.' `Ali proceeded and I accompanied him till he entered a place, and I entered with him to the Prophet to whom I said, 'Present (the principles of) Islam to me.' When he did, I embraced Islam 'immediately. He said to me, 'O Abu Dhar! Keep your conversion as a secret and return to your town; and when you hear of our victory, return to us. ' I said, 'By H him Who has sent you with the Truth, I will announce my conversion to Islam publicly amongst them (i.e. the infidels),' Abu Dhar went to the Mosque, where some people from Quraish were present, and said, 'O folk of Quraish ! I testify that None has the right to be worshipped except Allah, and I (also) testify that Muhammad is Allah's Slave and His Apostle.' (Hearing that) the Quraishi men said, 'Get at this Sabi (i.e. Muslim) !' They got up and beat me nearly to death. Al `Abbas saw me and threw himself over me to protect me. He then faced them and said, 'Woe to you! You want to kill a man from the tribe of Ghifar, although your trade and your communications are through the territory of Ghifar?' They therefore left me. The next morning I returned (to the Mosque) and said the same as I have said on the previous day. They again said, 'Get at this Sabi!' I was treated in the same way as on the previous day, and again Al-Abbas found me and threw himself over me to protect me and told them the same as he had said the day before.' So, that was the conversion of Abu Dhar (may Allah be Merciful to him) to Islam."

Narrated Ibn `Abbas: When Abu Dhar received the news of the Advent of the Prophet he said to his brother, "Ride to this valley (of Mecca) and try to find out the truth of the person who claims to be a prophet who is informed of the news of Heaven. Listen to what he says and come back to me." So his brother set out and came to the Prophet and listened to some of his talks, and returned to Abu Dhar and said to him. "I have seen him enjoining virtuous behavior and saying something that is not poetry." Abu Dhar said, "You have not satisfied me as to what I wanted." He then took his journey-food and carried a waterskin of his, containing some water till be reached Mecca. He went to the Mosque and searched for the Prophet and though he did not know him, he hated to ask anybody about him. When a part of the night had passed away, `Ali saw him and knew that he was a stranger. So when Abu Dhar saw `Ali, he followed him, and none of them asked his companion about anything, and when it was dawn, Abu Dhar took his journey food and his water-skin to the Mosque and stayed there all the day long without being perceived by the Prophet, and when it was evening, he came back to his retiring place. `Ali passed by him and said, "Has the man not known his dwelling place yet?" So `Ali awakened him and took him with him and none of them spoke to the other about anything. When it was the third day. `Ali did the same and Abu Dhar stayed with him. Then `Ali said "Will you tell me what has brought you here?" Abu Dhar said, "If you give me a firm promise that you will guide me, then I will tell you." `Ali promised him, and he informed `Ali about the matter. `Ali said, "It is true, and he is the Apostle of Allah. Next morning when you get up, accompany me, and if I see any danger for you, I will stop as if to pass water, but if I go on, follow me and enter the place which I will enter." Abu Dhar did so, and followed `Ali till he entered the place of the Prophet, and Abu Dhar went in with him, Abu Dhar listened to some of the Prophet's talks and embraced Islam on the spot. The Prophet said to him, "Go back to your people and inform them (about it) till you receive my order." Abu Dhar said, "By Him in Whose Hand my life is, I will proclaim my conversion loudly amongst them (i.e. the pagans)." So he went out, and when he reached the Mosque, he said as loudly as possible, "I bear witness that None has the right to be worshipped except Allah, and Muhammad is the Apostle of Allah." The People got up and beat him painfully. Then Al-Abbas came and knelt over him ((to protect him) and said (to the people), "Woe to you! Don't you know that this man belongs to the tribe of Ghifar and your trade to Sha'm is through their way?" So he rescued him from them. Abu Dhar again did the same the next day. They beat him and took vengeance on him and again Al-Abbas knelt over him (to protect him).