Buhayr wrote a letter to his brother Ka'b informing him of...

Buhayr wrote a letter to his brother Ka'b informing him of the situation and in the end of the letter mentioned, as a gesture of goodwill, that if he remained inimical towards the Prophet he would lose his life, but it he came to the Prophet and expressed regret for his activities he would be pardoned because the Prophet used to accept the repentance and regret of the wrongdoers and pardoned them. Ka'b who had full confidence in his brother came to Madina.

When he arrived in the Masjidun Nabi, the Prophet was ready to offer morning prayers. Ka'b offered prayers for the first time along with the Prophet. Then he went and sat by his side and placing his own hand on his, said: "O Prophet of Allah! Ka'b is very much ashamed and regretful for his doings and has come now to embrace Islam. Will you accept his repentance if he comes before you personally?" The Prophet replied in the affirmative. Thereupon, Ka'b declared: "I myself am Ka'b bin Zuhayr".

In order to make amends for the past calumnies and slanders Ka'b had already composed an eloquent panegyric in praise of the Prophet.[^3] He recited it in the mosque before the Prophet and his companions. This marvellous panegyric is the masterpiece amongst the panegyrics of Ka'b. Since the day it was recited before the Prophet, the Muslims have been memorizing and publishing it among others. The Muslim scholars have also written commentaries on it.

This panegyric has been written in Lamiyah form[^4] and consists of fifty-eight verses. Like the poets of the Age of Ignorance who began their panegyrics by addressing their beloved or by mentioning the ruined monuments, he begins the panegyric by remembering his cousin and beloved Sa'd. When he reaches the stage of repentance for his past bad deeds he says; "I was informed that the Prophet of Allah had threatened me, when what is desired from him is pardon and forgiveness".

And then he says; "The Prophet is a "Luminous candle" under whose radiation the people receive guidance direct, and he is a "naked sword" of Allah which is always victorious" Grief Mingled With Joy In the end of 8 A.H. the Prophet lost his eldest daughter Zaynab. She had been married to her maternal aunt's son, Abul 'As, before the prophethood of the Prophet and had declared her belief in her father immediately after his prophethood.

However, her husband continued to remain a polytheist and participated in the Battle of Badr against Islam and was taken prisoner.