"Al-'Ajam (non-Arabs) were mentioned before the Messenger of Allah (ﷺ) so the Prophet (ﷺ) said: 'I am supported more by them, or, by some of them, than I am by you, or some of you.'"
Jami` at-Tirmidhi Book 49, Hadith 332
← Previous Hadith that the Messenger of Allah (ﷺ) said: "Sam was the father of Arabs, Yafith was the father of Romans, and Ham was the father of Ethiopians."

Jami` at-Tirmidhi Book 49, Hadith 331 Next Hadith → "We were with the Messenger of Allah (ﷺ) when Surat Al-Jumu'ah was revealed, so he recited it until he reached: 'And others among them who have not yet joined them (62:3).' A man said to him: 'O Messenger of Allah! Who are these people who have not yet joined us?' But he did not say anything to him." He said: "Salman Al-Farisi was among us." He said: "So the Messenger of Allah (ﷺ) placed his hand upon Salman and said: 'By the One Whose Hand is my soul! If faith were on Pleiades then men among these people would reach it.'"

Jami` at-Tirmidhi Book 49, Hadith 333