Companions of the Prophet
Bukhari :: Book 5 :: Volume 57 :: Hadith 103
'Abdullah (bin Mas'ud) was mentioned before 'Abdullah bin 'Amr. The latter said, "That is a man I continue to love because I heard Allah's Apostle saying, ' Learn the recitation of the Qur'an from (any of these) four persons: 'Abdullah bin Masud, Salim the freed slave of Abu Hudhaifa, Ubai bin Kab, and Muadh bin Jabal." I do not remember whether he mentioned Ubai first or Muadh.
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