The Messenger of Allah ﷺ said, "Every nation has a trustworthy one, and our trustworthy one, O nation, is Abu Ubayda bin Jarra."
قال رسول الله ﷺ: إن لكل أمة أمينا، وإن أميننا أيتها الأمة: أبو عبيدة بن الجراح.
Bukhari narrated it in the Book of Military Expeditions (4382) from Abu Walid, "Shuba narrated to us, from Khalid Haddan, from Abu Qilaba, from Anas," and he mentioned it. Muslim narrated it in the Book of the Virtues of the Companions (2419-53) through two routes from Ismail bin Ulaya, from Khalid Haddan, with the same wording. In one wording, "The people of Yemen came to the Messenger of Allah ﷺ and said, 'Send someone with us to teach us the sunnah and Islam.' He said, so he took Abu Ubayda by the hand and said, 'This is the trusted one of this nation.'" Muslim narrated it in the Book of the Virtues of the Companions (2419-54) from Amr Naqid, "Affan narrated to us, Hammad bin Salama narrated to us, from Thabit, from Anas," and he mentioned it.As for what Tirmidhi (3791), Ibn Majah (154), and Ahmad (12904) narrated, and which Ibn Hibban (7131), Hakim (3/422), Ibn Abu Asim (1281), and Diya in Mukhtara (2242) graded sahih, all of them through routes from Sufyan Thawri, from Khalid Haddan, from Abu Qilaba, from Anas bin Malik, who said, the Messenger of Allah ﷺ said, "The most merciful of my nation towards my nation is Abu Bakr, the strictest of them in the matter of Allah is Umar, the most sincere of them in modesty is Uthman, the best of them in reciting the Book of Allah is Ubayy bin Kaab, the best of them in matters of inheritance is Zayd bin Thabit, the most knowledgeable of them in what is lawful and unlawful is Muaz bin Jabal. Indeed, every nation has a trusted one, and the trusted one of this nation is Abu Ubayda bin Jarra."The correct view is that this is mursal, except for his saying, "Indeed, every nation has a trusted one, and the trusted one of this nation is Abu Ubayda bin Jarra." Tirmidhi said, "This is a sahih hadith," and likewise Ibn Hibban, Hakim, and others graded it sahih, based on the apparent chain, for its narrators are trustworthy, and Abu Qilaba's hearing from Anas is established. However, he did not hear from him this hadith except for his saying, "Every nation has a trusted one, and the trusted one of this nation is Abu Ubayda," and the rest he transmitted as mursal.This is what Daraqutni favored, for he said in Ilal (2676), "The most sahih of them is through Shuba, from Abu Qilaba, from Anas" (meaning by this, "Every nation has a trusted one, and the trusted one of this nation is Abu Ubayda," as Bukhari narrated it), and the rest is mursal.Khatib said, "As for Abu Qilaba's hadith, what is sahih of it, connected and traceable, is only the mention of Abu Ubayda, and what is beyond that is mursal, disconnected." Fasl li-Wasl Mudraj (672/2). Bayhaqi said the same (210/6), as did Ibn Hajar in Fath al-Bari (117/7), and others.It appears that Bukhari and Muslim also favored the view that the rest of the hadith is mursal, for neither of them included this hadith in their two Sahihs except for what pertains to Abu Ubayda. Bukhari through the route of Shuba (4382) and through the route of Abdul-Ala (3744), and Muslim through the route of Ismail bin Ulaya (2419:53), all of them from Khalid Haddan, from Abu Qilaba, from Anas bin Malik, mentioning it in praise of Abu Ubayda.They both turned away from the rest of the hadith because of the aforementioned defect, for had the chain of Sufyan Thawri, from Khalid Haddan, from Abu Qilaba, from Anas, been sahih in their view, they would have hastened to include it because of the merit it contains for Abu Bakr and Umar, and Bukhari would have divided it up and presented it in various chapters according to his habit.