Chapter# 59, Book 31, Number 6117:
Abu Huraira reported Allah’s Messenger (may peace be upon him) as saying: If the din were at the Pleiades, even then a person from Persia would have taken hold of it, or one amongst the Persian descent would have surely found it.
Book 31, Number 6178:
Abu Huraira reported: We were sitting in the company of Allah’s Apostle (may peace be upon him) 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 Apostle (may peace be upon him) made no reply, until he questioned him once, twice or thrice. And there was amongst us Salman the Persian. The Apostle of Allah (may peace be upon him) placed his hand on Salman and then said: Even if faith were near the Pleiades, a man from amongst these would surely find it.