The first of the companions of the Prophet ﷺ who came to us (in Medina), were Musʿab bin ʿUmar and Ibn Um Maktum, and they started teaching us the Qur'an. Then came ʿAmmar, Bilal and Saʿd. Afterwards ʿUmar bin Al-Kkattab came along with a batch of twenty (men): and after that the Prophet ﷺ came. I never saw the people of Medina so pleased with anything as they were with his arrival, so that even the little boys and girls were saying, "This is Messenger of Allah ﷺ who has come." He (the Prophet ﷺ ) did not come (to Medina) till I had learnt Surat Al-Ala and also other similar Suras.  

أَوَّلُ مَنْ قَدِمَ عَلَيْنَا مِنْ أَصْحَابِ النَّبِيِّ ﷺ مُصْعَبُ بْنُ عُمَيْرٍ وَابْنُ أُمِّ مَكْتُومٍ فَجَعَلاَ يُقْرِئَانِنَا الْقُرْآنَ ثُمَّ جَاءَ عَمَّارٌ وَبِلاَلٌ وَسَعْدٌ ثُمَّ جَاءَ عُمَرُ بْنُ الْخَطَّابِ فِي عِشْرِينَ ثُمَّ جَاءَ النَّبِيُّ ﷺ فَمَا رَأَيْتُ أَهْلَ الْمَدِينَةِ فَرِحُوا بِشَىْءٍ فَرَحَهُمْ بِهِ حَتَّى رَأَيْتُ الْوَلاَئِدَ وَالصِّبْيَانَ يَقُولُونَ هَذَا رَسُولُ اللَّهِ قَدْ جَاءَ فَمَا جَاءَ حَتَّى قَرَأْتُ {سَبِّحِ اسْمَ رَبِّكَ الأَعْلَى} فِي سُوَرٍ مِثْلِهَا