We were sitting in the company of Allah's Apostle ﷺ that Sura al-Jumu'a was revealed to him and when he recited (these words):" Others from amongst them who have not yet joined them," a person amongst them (those who were sitting there) said: Messenger of Allah! But Allah's Apostle ﷺ made no reply, until he questioned him once, twice or thrice. And there was amongst us Salman the Persian. The Apostle of Allah ﷺ placed his hand on Salman and then said: Even if faith were near the Pleiades, a man from amongst these would surely find it. (Using translation from Muslim 2546b)  

كُنَّا جُلُوسًا عِنْدَ النَّبِيِّ ﷺ إِذْ نَزَلَتْ عَلَيْهِ سُورَةُ الْجُمُعَةِ فَلَمَّا قَرَأَ {وَآخَرِينَ مِنْهُمْ لَمَّا يَلْحَقُوا بِهِمْ} [الجمعة 3] قَالَ «مَنْ هَؤُلَاءِ يَا رَسُولَ اللهِ فَلَمْ يُرَاجِعْهُ النَّبِيُّ ﷺ حَتَّى سَأَلَهُ مَرَّةً أَوْ مَرَّتَيْنِ أَوْ ثَلَاثًا» قَالَ وَفِينَا سَلْمَانُ فَوَضَعَ النَّبِيُّ ﷺ يَدَهُ عَلَى سَلْمَانَ ثُمَّ قَالَ «لَوْ كَانَ الْإِيمَانُ عِنْدَ الثُّرَيَّا لَنَالَهُ رِجَالٌ مِنْ هَؤُلَاءِ»