In Islam, no one has superiority over anyone else except in terms of taqwa (righteousness, fear of Allah). Allah (may He be exalted) says: {Indeed, the most noble of you in the sight of Allah is the most righteous of you} [al-Hujurat 49:13]. It is only on the basis of righteous deeds that one Muslim may be superior to another. The one who is most entitled to lead the prayer is the one who has most knowledge of the Book of Allah (may He be exalted), as the Prophet (blessings and peace of Allah be upon him) told us. If a man has more knowledge of the Qur’an than anyone else present, then he has more right to lead the prayer. So no attention should be paid to race, colour, lineage or position. This hadith is the most eloquent proof of that. In it, ‘Abdullah ibn ‘Umar (may Allah be pleased with him) narrates that when the Muhajirin (migrants) from Makkah came to al-‘Usbah, which is a place near Quba’ in al-Madinah al-Munawwarah, approximately two miles south of it, before the Messenger of Allah (blessings and peace of Allah be upon him) migrated to Madinah, they were led in prayer by Salim, the freed slave of Abu Hudhayfah, who had the most knowledge of Qur’an, meaning that he had memorized more Qur’an. Salim had been a slave belonging to a woman, then he was manumitted, but that did not prevent him from leading the companions of the Messenger of Allah (blessings and peace of Allah be upon him) in prayer, because he had memorized more of the Qur’an than the others. Salim had memorized Qur’an from the Sahabah whom the Prophet (blessings and peace of Allah be upon him) had sent to the believers in Madinah to teach them the Qur’an and Islam, such as Mus‘ab ibn ‘Umayr and others. Salim was not in fact a freed slave of Abu Hudhayfah ibn ‘Utbah ibn Rabi‘ah – who was one of the earliest to become Muslim; rather Salim was the freed slave of a woman of the Ansar who had manumitted him. But he was called the freed slave of Abu Hudhayfah because he stayed close to him after he was manumitted, and Abu Hudhayfah had adopted him. Then when the prohibition of adoption was revealed, he continued to be known as the freed slave (mawla) of Abu Hudhayfah. This hadith indicates that the one who has memorized the most Qur’an is the most deserving of leading the prayer..