From Sahih Bukhari (Hadith 4381):
Narrated Hudhaifa:The people of Najran came to the Prophet (ﷺ) and said, "Send an honest man to us." The Prophet (ﷺ) said, "I will send to you an honest man who is really trustworthy." Everyone of the (Muslim) people hoped to be that one. The Prophet (ﷺ) then sent Abu Ubaida bin Al-Jarrah
Reference: Bukhari 4381