Sahih al-Bukhari 692
Book 10: Call to Prayers (Adhaan) · Narrated by Ibn `Umar
Arabic
حَدَّثَنَا إِبْرَاهِيمُ بْنُ الْمُنْذِرِ، قَالَ حَدَّثَنَا أَنَسُ بْنُ عِيَاضٍ، عَنْ عُبَيْدِ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ لَمَّا قَدِمَ الْمُهَاجِرُونَ الأَوَّلُونَ الْعُصْبَةَ ـ مَوْضِعٌ بِقُبَاءٍ ـ قَبْلَ مَقْدَمِ رَسُولِ اللَّهِ صلى الله عليه وسلم كَانَ يَؤُمُّهُمْ سَالِمٌ مَوْلَى أَبِي حُذَيْفَةَ، وَكَانَ أَكْثَرَهُمْ قُرْآنًا.
English translation
Narrated Ibn `Umar:When the earliest emigrants came to Al-`Usba [??] a place in Quba', before the arrival of the Prophet- Salim, the slave of Abu Hudhaifa, who knew the Qur'an more than the others used to lead them in prayer
Reference: Sahih al-Bukhari 692, Book of Call to Prayers (Adhaan). English translation by Dr. Muhammad Muhsin Khan.