and Abu Mahdhurah, the muezzin of Mecca.
He emigrated only a short while after the Battle of Badr, as Ibn Saʿd states.
The Prophet ﷺ held him in high regard and would leave him in charge of Medina, where he led those who remained behind in prayer.
Al-Shaʿbi said, “The Prophet ﷺ deputized ʿAmr ibn Umm Maktum to lead the people in prayer; he was blind (1), and that was—so he claimed—during the Expedition of Tabuk.”
The sounder report, however, is that on that occasion the Prophet ﷺ placed ʿAli ibn Abi Talib (2) in charge of Medina.
Qatadah said, “The Prophet ﷺ appointed Ibn Umm Maktum twice over Medina, and he was blind (3).”
Mujalid (4) narrated from al-Shaʿbi that the Prophet ﷺ left Ibn Umm Maktum in charge of Medina during the Expedition of Badr (5); this contradicts the preceding statement.
It is likewise contradicted by the report of Abu Ishaq, from al-Baraʾ, who said, “The first to arrive among us was Musʿab ibn ʿUmayr, and after him ʿAmr ibn Umm Maktum came.” They asked him, “What have those behind you done?” He replied, “They are right behind me.” (6)
Shuʿbah transmitted from Abu Ishaq that he heard al-Baraʾ say, “The first to come to us were Musʿab ibn ʿUmayr and Ibn Umm Maktum, and the two of them began teaching the people the Quran.” (7)