Sahih al-Bukhari 4897
Narrated Abu Huraira:
While we were sitting with the Prophet (ﷺ) Surat Al-Jumu'a was revealed to him, and when the Verse, 
"And He (Allah) has sent him (Muhammad) also to other (Muslims).....' (62.3) was recited by the 
Prophet, I said, "Who are they, O Allah's Messenger (ﷺ)?" The Prophet (ﷺ) did not reply till I repeated my 
question thrice. At that time, Salman Al-Farisi was with us. So Allah's Messenger (ﷺ) put his hand on 
Salman, saying, "If Faith were at (the place of) Ath-Thuraiya (pleiades, the highest star), even then 
(some men or man from these people (i.e. Salman's folk) would attain it."
حَدَّثَنِي عَبْدُ الْعَزِيزِ بْنُ عَبْدِ اللَّهِ، قَالَ حَدَّثَنِي سُلَيْمَانُ بْنُ بِلاَلٍ، عَنْ ثَوْرٍ، عَنْ أَبِي الْغَيْثِ، عَنْ أَبِي هُرَيْرَةَ، رضى الله عنه قَالَ كُنَّا جُلُوسًا عِنْدَ النَّبِيِّ صلى الله عليه وسلم فَأُنْزِلَتْ عَلَيْهِ سُورَةُ الْجُمُعَةِ ‏{‏وَآخَرِينَ مِنْهُمْ لَمَّا يَلْحَقُوا بِهِمْ‏}‏ قَالَ قُلْتُ مَنْ هُمْ يَا رَسُولَ اللَّهِ فَلَمْ يُرَاجِعْهُ حَتَّى سَأَلَ ثَلاَثًا، وَفِينَا سَلْمَانُ الْفَارِسِيُّ، وَضَعَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَدَهُ عَلَى سَلْمَانَ ثُمَّ قَالَ ‏"‏ لَوْ كَانَ الإِيمَانُ عِنْدَ الثُّرَيَّا لَنَالَهُ رِجَالٌ ـ أَوْ رَجُلٌ ـ مِنْ هَؤُلاَءِ ‏"‏‏.‏