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?" 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."

Abu Huraira reported: We were sitting in the company of Allah's Messenger (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: Allah's Messenger! But Allah's Messenger (ﷺ) made no reply, until he questioned him once, twice or thrice. And there was amongst us Salman the Persian. The Messenger 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.