Identity of the first male Muslim

This conversion would have happened sometime between 610 CE, when Muhammad started sharing his experiences (visions of divine origin) with his immediate family, and 612 CE, when Muhammad first began preaching in public to his fellow citizens in Mecca, in what is now west-central Saudi Arabia.

After the Muslim conquests began, a Muslim's standing in the Islamic state depended on his services to the community, and especially on the length of time he had been a member of the community. Early converts (who had faced persecution with Muhammad) had a much higher status than later converts (who may have joined only after there were worldly reasons to do so). The first male convert may thus be presumed to have a special status.

Arguments for and against the claims of Ali or Abu Bakr are especially significant in the light of the disputes over the leadership of the Muslim community after the death of Muhammad. Ali and his followers felt that Muhammad had clearly indicated that he wanted Ali, his cousin and son-in-law, to succeed him; other Muslims stood behind Abu Bakr. After a period of internal dissension or even strife, Abu Bakr was recognized as the first caliph.

Differences in opinion over the succession, and the later course of affairs in the Muslim community, ultimately led to a split between the majority Sunni denomination and the minority Shia denomination.

Shia Muslims all assert that Ali was the first male to accept Muhammad as a prophet, a special distinction that foreshadows his later role as rightful successor to Muhammad. They say that Muhammad, Khadija bint Khuwaylid (Muhammad's wife), and Ali all gathered for prayer before the Kaaba, thus becoming the first Muslims to worship in public.

Shia cite that when the Muhammad asked who is a believer, Ali, at 13, was the first to declare his affirmation. Muhammad went on to ask two more times, no one else step forward. In fact, after the third time, people started to wonder and snicker at the 13-year-old, at which Muhammad replied that the wisdom Ali contained exceed the wisdom of the group assembled.

Some Shias assert that Ali should not even be called a convert, as he and Muhammad were hanif monotheists, and had refused to worship idols even from birth.

Sunni Muslims have different views on the order of conversion Ali and of Abu Bakr—or, although there is agreement that Ali's conversion is first among children, and Abu Bakr was the first adult male to believe in Muhammad. It is commonly said that Abu Bakr was the first grown man to accept Islam, and Ali the first child; this formulation does not draw any conclusions as to whether Abu Bakr was the first male to embrace Islam.

The identity of the first male Muslim is of little importance to Western historians of Islam. William Montgomery Watt, the author of one of the more detailed English biographies of Muhammad. He wrote:

It is universally agreed that Khadijah was the first to believe in her husband and his message, but there was a hot dispute about the first male. At-Tabari has a large selection of source material, and leaves the reader to decide for himself between the three candidates, Ali, Abu Bakr, and Zayd ibn Harithah. The claim of Ali may in a sense be true, but for the Western historian it cannot be significant, since Ali was admittedly only nine or ten at the time and a member of Muhammad's household. The claim made for Abu Bakr may also be true in the very different sense that, at least from the time of the Abyssinian affair, he was the most important Muslim after Muhammad; but his later primacy has probably been reflected back into the early records. As a matter of sheer fact Zayd b. Harithah has possibly the best claim to be regarded as the first male Muslim, since he was a freedman of Muhammad's and there was a strong mutual attachment; but his humble status means that his conversion has not the same significance as that of Abu Bakr.[10]

Since no political or religious faction ever formed behind Zayd, his claims to priority have been only intermittently advanced.

As the quote from Watt indicates, academic historians are reluctant to speak with much certainty on the matter. All the texts relating to the first years of Islam were written down some 150 years after the events in question—as well as after the events had become matters of intense dispute. In the eyes of the academic, there is not enough reliable data to form a firm conclusion.

• Timing of Sahabah becoming Muslims
• List of notable Muslim records and milestones during Muhammad's era

• Reza Aslan, No god but God: The Origins, Evolution, and Future of Islam, 2005, ISBN 1-4000-6213-6
• Alfred Guillaume -- Life of Muhammad, Oxford University Press, 1955.
• Betty Kelen, Muhammad: The Messenger of God, 2001, ISBN 0-929093-12-7
• Francis Edward Peters, Muhammad and the Origins of Islam, 1994, ISBN 0-7914-1876-6 (accepts Ibn Ishaq's account)
• Andrew Rippin, Muslims, 2001,ISBN 0-415-21781-4
• Karen Armstrong, Muhammad: A Western Attempt to Understand Islam, 1991.
• Muhammad Husayn Haykal, The Life of Muhammad, (1995) Islamic Book Service. ISBN 1-57731-195-7,
• Ghulam Malik (Associated Press writer), Muhammad, An Islamic Perspective, University Press of America (1996), ISBN 0-7618-0307-6
• William Montgomery Watt -- Muhammad at Mecca, Oxford University Press, 1953.