One of his indecent works was poem of reproach and satire...

One of his indecent works was poem of reproach and satire about Allah’s Messenger. He and some other atheists who were extremely biased in their paganism and in committing horrible crimes against Islam were so detested that the Holy Prophet made Muslims duty bound to shed their blood upon the conquest of Mecca.

Hearing this, Ka`b ibn Zuhayr, with his poetic talent, composed an ode eulogizing the Holy Prophet and set out for Medina where he introduced himself to Abu-Bakr and beseechingly asked to take him to the Holy Prophet so that he might forgive him. Abu-Bakr accepted his request and took to the Holy Prophet. He covered his face with his turban so that nobody would recognize him, said, “O Allah’s Messenger!

This Arab man wishes to embrace Islam.” The Holy Prophet stretched out his hand and Ka`b pledged his allegiance, saying, “My father and mother are at your disposal, O Allah’s Messenger! This is the station of one who seeks refuge with you. I am Ka`b ibn Zuhayr.” He immediately recited the ode eulogizing the Holy Prophet. When he finished, the Holy Prophet rewarded him with his stripped cloth from Yemen, accepted his Islam and forgave him.

Behavior towards the Chief of Hypocrites `Abdullah ibn Ubay who was the chief of hypocrites in Medina and his friends did not spare any attempt to persecute the Holy Prophet and Muslims. They were spying in favor of the enemies of Islam and insisted on hypocrisies so much so that Qur’anic verses were revealed on their being deprived of Allah’s mercy and their punishment on the Judgment Day. Nevertheless, they did not stop their hypocrisy nor did they repent.

When the Holy Prophet returned from Tabuk, `Abdullah ibn Ubay fell sick and lay in the course of death. Based on the Qur’anic verse “He brings forth the living from the dead (7:95)” His son, a true and pure-hearted youth, was favored by the Holy Prophet and Muslims. Based on the Qur’anic verse, “And you shall do good to your parents (2:83)” he would visit his father everyday as a religious duty. This good son of Ubay asked the Holy Prophet to visit his father to save the dignity of the family.

Hence, the Holy Prophet too visited his father to preserve the dignity of a man who was a true believer. Out of sympathy, the Holy Prophet said to `Abdullah ibn Ubay, “I forbade you to make friends with the Jews but you did not accept it.