He was also a murderer, a common thief and rapist:
BatYeorp43ffMohammedandhisslaughters The following from the expert on the dhimmi under Islam, Bat Ye'or, in The Dhimmi: Jews and Christians under Islam (pp. 43ff.)
In 624 Muhammad, joined by more followers, called upon the Qaynuqa, one of the Jewish tribes of Medina, to recognize his prophetic mission. When they refused, he besieged and overcame them. On the intercession of one of their protectors---a recent convert to Islam---their lives were spared, but they were expelled from the city, their lands and a part of their possessions being confiscated by the Muslims. The following year the Jewish Nadir tribe suffered a similar fate: Muhammad burned down their palm groves and divided all their fields and houses among thecommunity of Believers. 4
In 627 the Meccans sent a united force to lay siege to the Muslims in Medina but they withdrew suddenly on a stormy night and without fighting. However, guided by the angel Gabriel, Muhammad then turned his host against the Jewish tribe of the Qurayza, who had been neutral during the seige. Because the Jews refused conversion, Muhammad attacked and overwhelmed them. Trenches were then dug in the marketplace of Medina, and the Jews---six to nine hundred of them, according to traditional Muslim sources-----were led forth in batches and decapitated. All the menfolk perished in this way, with the exception of one convert to Islam. The Prophet then divided the women, children, houses, and chattels among the Muslims.5
Shrewd in political matters, Muhammad then endeavored to win over the powerful tibes of Mecca. In 628, taking advantage of a treaty of nonbelligerency (Hudaybiya) with the Meccans,6 he attacked the oasis of Khaybar, one hundred and forty kilometers northwest of Medina, cultivated by another Jewish tribe. The assailants came to the oasis at night and in the morning attacked the peasants as they were coming out to work in the fields, carrying spades and baskets.7 Their palm groves were burned down. After a siege lasting a month and a half, the inhabitants surrendered under the terms of a treaty known as the dhimma. According to this agreement Muhammad allowed the Jews to continue cultivating their oasis, on condition they ceded to him half of their produce; he also reserved the right to break the agreement and expel them whenever he wished.8 Subsequently, all the Jewish and Christian communities of Arabia submitted to the Muslims under the terms of a dhimma similar to that granted at Khaybar
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4. al-Bukhari (d. 869), Les Traditions Islamiques (Al-Sahih), trans. O. Houdas and W. Marcais (Paris, 1903-1914), vol. 2, title 41, chap 6; title 56, chap. 80; 3, chap. 154:2. This compilation of the acts and sayings attributed to Muhammad, completed in the ninth century, constitutes one of the two pillars of Islamic jurisprudence, the other being the contemporary compilation made by his younger disciple, Muslim (d. 875).
5. Idn Ishaq, pp. 461-69; M. Gaudefroy-Demombynes, Mahomet (Paris, 1969), pp. 142-46; W. Montgomery Watt, "Muhammad", in the Cambridge History of Islam (Cambridge, 1970), 1:39-49.
6. Gaudefroy-Demombynes, p. 154: Bukhari, vol. 2, title 54, chap. 15.
7. Ibn Ishaq, p. 511; Bukhari, vol. 2, title 56, chaps. 102: 5, 130.
8. Ibn Ishaq, pp. 524-25; Bukhari, vol. 2, title 41, chaps. 8, 9, 11, 17, and title 57, chap. 19: 10. For example of the treaties between Muhammad and the Jews living in Makna (near Eilat), see al-Baladhuri, vol. 1, The Origins of the Islamic State (Kitab Futuh al-Buldan), trans. P.K. Hitti (New York, 1916), pp. 93-94.