It is narrated from Muhammad bin Ishaq that when the Messenger of Allah (peace and blessings be upon him) came to Madinah on his return from Ta'if, Bujayr bin Zuhayr bin Abi Sulma wrote to his brother Ka'b bin Zuhayr bin Abi Sulma, informing him that the Messenger of Allah (peace and blessings be upon him) had had a man killed in Makkah who used to satirize (disparage) him and harm him, and that of the poets of Quraysh, Ibn al-Ziba'ra and Hubayrah bin Abi Wahb had fled in every direction; so if you care for your life, hasten to the presence of the Messenger of Allah (peace and blessings be upon him), for he does not kill anyone who comes repentant; and if you cannot do that, then flee to wherever you can find safety. Before this, Ka'b bin Zuhayr had composed some verses in which he insulted the Messenger of Allah (peace and blessings be upon him), until those verses became well known. The gist of the verses he had composed on his brother Bujayr's acceptance of Islam was: "Now, convey this message from me to Bujayr: is there any benefit for you in what you have said? You have told me that you have done that deed, so what was it that set you on this path? Upon a way of life on which you found neither your mother nor your father, nor did your elders find their forebears upon it. Had you not done this I would not have grieved, nor would I have said at your stumbling: 'Would that you had risen.' That 'Ma'mun' (the Messenger of Allah, peace and blessings be upon him) has given you such a cup to drink that it has quenched you, and despite drinking again and again your thirst is not quenched." The narrator says that Ka'b used the word 'al-Ma'mun' (the trustworthy) because Quraysh used to call the Messenger of Allah (peace and blessings be upon him) by this title. Then when this letter reached Ka'b, the earth became narrow for him and he became very fearful for his life, and the enemies who were around him began spreading rumours that "he is now going to be killed." When he found no way out, he composed that famous ode (Banat Su'ad) in which he praised the Messenger of Allah (peace and blessings be upon him) and mentioned his fear and the rumours of the slanderers. Then he set out from there and reached Madinah, and stayed with a man of the tribe of Juhaynah with whom he was acquainted. At the time of the dawn prayer that man took him to the Messenger of Allah (peace and blessings be upon him). He prayed with the people, then that man pointed towards the Messenger of Allah (peace and blessings be upon him) and said: "This is the Messenger of Allah (peace and blessings be upon him); go to him." I was told that he went to the Messenger of Allah (peace and blessings be upon him) until he placed his hand in the blessed hand of the Prophet (peace and blessings be upon him). The Messenger of Allah (peace and blessings be upon him) did not recognize him. Ka'b said: "O Messenger of Allah! Ka'b bin Zuhayr has come to seek safety from you, repentant and as a Muslim. Will you accept his repentance if I bring him to you?" The Messenger of Allah (peace and blessings be upon him) said: "Yes." Then he said: "O Messenger of Allah! I am Ka'b bin Zuhayr."