When the earliest emigrants came to Al-ʿUsba [??] 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.
لَمَّا قَدِمَ الْمُهَاجِرُونَ الأَوَّلُونَ الْعُصْبَةَ مَوْضِعٌ بِقُبَاءٍ قَبْلَ مَقْدَمِ رَسُولِ اللَّهِ ﷺ كَانَ يَؤُمُّهُمْ سَالِمٌ مَوْلَى أَبِي حُذَيْفَةَ وَكَانَ أَكْثَرَهُمْ قُرْآنًا
when the first emigrants came (to Madina), they stayed at al-‘Asbah (a place near Madina) before the advent of the Messenger of Allah ﷺ. Salim, the client of Abu Hudhaifah, acted as their imam, as he knew the Qur’an better than all of them, al-Haitham(the narrator) added: and ‘Umar b. al-Khattab and Abu Salamah b. ‘Abd al-Asad were among them.
أَنَّهُ قَالَ لَمَّا قَدِمَ الْمُهَاجِرُونَ الأَوَّلُونَ نَزَلُوا الْعَصْبَةَ قَبْلَ مَقْدَمِ النَّبِيِّ ﷺ فَكَانَ يَؤُمُّهُمْ سَالِمٌ مَوْلَى أَبِي حُذَيْفَةَ وَكَانَ أَكْثَرَهُمْ قُرْآنًا زَادَ الْهَيْثَمُ وَفِيهِمْ عُمَرُ بْنُ الْخَطَّابِ وَأَبُو سَلَمَةَ بْنُ عَبْدِ الأَسَدِ