Banu Qaynuqa In 624, the Muslims moved against the Jewish tribe of the
Banu Qaynuqa. According to
Ibn Hisham, a dispute had broken out between the Muslims and the Banu Qaynuqa, the allies of the
Khazraj tribe. When a Muslim woman visited a jeweller's shop in the Qaynuqa marketplace, she was pestered to uncover her face. The goldsmith, a Jew, pinned her clothing such that upon getting up, she was unveiled. A Muslim man, coming upon the resulting commotion, killed the shopkeeper in retaliation and was in turn killed by Jews. As a result of the revenge killings, enmity grew between Muslims and the Banu Qaynuqa. The Muslims besieged the Banu Qaynuqa, and after 15 days, forced them to surrender. Now, Ibn Ubayy was allied to the Qaynuqa and according to Muslim historians, appealed to Muhammad for leniency. "Let me go," Muhammad said. Ibn Ubayy replied: Then, Muhammad acceded to his request and gave the Banu Qaynuqa three days to leave the city. Ibn Ubayy's last sentence has been interpreted in various ways. Rodinson considered it as threat against Muhammad, However, Ibn Ubayy had not defended the Qaynuqa but merely pleaded for mercy. His plea implies that Muhammad intended to put the Qaynuqa to death, as he later did with the
Banu Qurayza, but after Ibn Ubayy's intercession, they were merely expelled from Medina, their property falling to Muhammad and the
Muhajirun.Some young Muslims, however, argued that the Meccans should be fought outside the city. Persuaded by the latter, Muhammad adopted an offensive strategy. According to Islamic tradition, Ibn Ubayy expressed his anger about his advice being rejected: "We do not know why we shall kill ourselves". When Muhammad marched out to fight the Meccans, Ibn Ubayy also marched out with 300 of his own men and his remaining Jewish allies, according to
al-Waqidi; however, Muhammad ordered him to send the Jews back into the town, calling them "idolaters". Ibn Ubayy then led his men back to Medina, retiring to the strongholds, while Muhammad resumed his advance. According to Watt, Surah interprets Ibn Ubayy's withdrawal as showing "cowardice and lack of belief in God and the Prophet". Muhammad's 700 men met the 3000 of the Quraish in the
Battle of Uhud and were defeated. The Quraish, however, did not succeed in killing Muhammad, and did not attempt to occupy the town of Medina, possibly because they knew it was guarded by Ibn Ubayy. Rodinson suggests that the Meccans did not want to reforge the very unity of the population, which had been jeopardised by Muhammad's defeat.
Banu Nadir Ibn Ubay was also involved in Muhammad's conflict with another Jewish tribe, the
Banu Nadir. Ibn Ishaq writes that when Muhammad ordered the tribe to leave the city within ten days, "certain persons of Medina who were not Believers sent a message to the Banu al-Nadir: 'Hold out, and defend yourselves; we shall not surrender you to Muhammad. If you are attacked we shall fight with you and if you are sent away we shall go with you'". However, as the promised help failed to materialise, the Nadir surrendered and Muhammad expelled them from the city. Watt considered this to be the first instance in which Ibn Ubayy went beyond verbally criticising Muhammad to intriguing against him, a practice Watt saw as continuing for the next two years. Watt described the phrase as an attempt by Ibn Ubayy "to undermine Muhammad's authority and make men think of expelling him". Later during the march, Muhammad's wife
Aisha was rumoured to have committed adultery, and Ibn Ubay was among those spreading the rumour. One of the chiefs of the Aws asked for the permission to punish the slanderers without incurring a feud, but the Khazraj opposed that. Based on
Sura 24, Muhammad declared Aisha innocent and had three of her accusers, who had come forward, punished by eighty lashes. He did not venture to enforce the sentence against Ibn Ubayy, who had not come forward. ==Last years==