Muwatta Malik #304
Prayer in Congregation
Yahya related to me from Malik from Yahya ibn Said that a man
used to lead the people in prayer in al-Aqiq (a place near Madina),
and Umar ibn Abd al-Aziz sent a message to him forbidding him to do
so.
Malik said, "He only forbade him because his father was
not known."
About Muwatta Malik
This hadith is #304 from Muwatta Malik, in the Book of Prayer in Congregation. Muwatta Malik contains 1,985 hadiths across 61 books.