He instructed me about necessary matters and asked me to...
He instructed me about necessary matters and asked me to recite the Kalimah (La ilaha illallah Muhammadun Rasulullah) I recited it to him and thus entered the fold of Islam. Thereafter he took leave of the Prophet and started for the Ka'bah. Upon reaching there, when he saw a big gathering of Qurayshite infidels, he shouted in a loud voice, "Hear O Quraysh, I stand witness that Allah is One and Muhammad is His Prophet".
This voice frightened the audition of Quraysh and demolished the image of their Laat and Uzza. The feeling of the Quraysh that the dignity of their idols had been pulled down made them extremely perturbed. At last people in unison encircled Abu Dharr. They started beating him so severely that he fainted. He would have nearly died but for the sudden arrival of Abbas bin Abd al-Muttalib. When he saw that the devotee of Muhammad was about to die, he could not help laying himself down on Abu Dharr.
He said, "O people! What has happened to you? You are killing a great man of Bani Ghifar. Why have you forgotten that you carry on trade with Bani Ghifar and visit them off and on. Don't you fear his tribe at all". At this those people left Abu Dharr and went away. After they had left, Abu Dharr who was bleeding, got up from there and. went to the well of Zamzam. He felt extremely thirsty on account of severe wounds and profuse bleeding. Hence he drank water first and then cleansed his body.
After that he came groaning to the Holy Prophet. As soon as the Prophet saw him in this condition he felt very sorry for him and said, Abu Dharr! Have you eaten or drunk something?" Abu Dharr: My master! I have felt some relief after drinking the water of Zamzam. Prophet: No doubt it gives relief. After that he consoled Abu Dharr and provided him with food. Though Abu Dharr had suffered much because of his speech, yet his religious fervour did not allow him to return to his country calmly.
His firm belief demanded to make Quraysh believe that human intelligence despises the superstition of idolatry. He took leave of the Prophet and came to the precincts of Ka'bah again. He stood upon a raised spot and called out with a firm determination. "O people of Quraysh! Listen to me. I bear witness that there is no god except Allah and I testify that Muhammad is the Messenger of Allah".