Deemed Trustworthy by the Holy Prophet (sa)

According to the narrations of Sahih Bukhari and Sahih Muslim, the people of Najran – while according to another narration of Sahih Muslim, the people of Yemen – came to the Holy Prophet (sa) and said, “Please, send someone with us who may teach us the faith.” In one narration it is mentioned that they said, “Please, send a trustworthy person with us.” Upon this request, the Holy Prophet (sa) said, “I will certainly send such a trustworthy person with you who will do justice to his duty.” Then, the Holy Prophet (sa) held the hand of Hazrat Abu Ubaidah bin Jarrah (ra) and said, هَذَا أَمِیْنُ هَذِهِ الْاُمَّةِ (i.e., he is the custodian of this Ummah.)”

(Sahih al-Bukhari, Kitab Fada‘il Ashab al-Nabi, Bab Manaqib Abi Ubaidah bin al-Jarrah, Hadith 3745) (Sahih Muslim, Kitab Fada‘il al-Sahabah, Bab Min Fadail Abi Ubaidah bin al-Jarrah, Hadith 2419-2420)