The first person among the boys/youth (الصبيان) to embrace Islam was علي بن أبي طالب (Ali ibn Abi Talib). According to Islamic historical tradition, when the Prophet Muhammad (peace be upon him) received his prophetic mission and began calling people to Islam, Ali was a young boy living in the Prophet's household. He accepted Islam at approximately ten years of age, making him the first child or youth to believe.
Islamic historians distinguish the earliest converts by category: خديجة بنت خويلد was the first woman, أبو بكر الصديق was the first free adult man, زيد بن حارثة was the first freed slave, and علي بن أبي طالب was the first among the boys.
عمر بن الخطاب converted later, in the sixth year of the prophetic mission. عبد الله بن عمر was the son of Umar and was born around the time Islam began. الحسن (al-Hasan) was the grandson of the Prophet, born years after the advent of Islam.
