Jami` at-Tirmidhi 3790

Narrated Anas bin Malik:that the Messenger of Allah (ﷺ) said: "The most merciful of my nation to my nation is Abu Bakr, and the most severe of them concerning the order of Allah is 'Umar, and the most truly modest of them is 'Uthman bin 'Affan. The most knowledgeable of them concerning the lawful and unlawful is Mu'adh Bin Jabal, the most knowledgeable of them concerning (the laws of) inheritance is Zaid bin Thabit, the best reciter (of the Qur'an) among them is Ubayy bin Ka'b, and every nation has a trustworthy one, and the trustworthy one of this nation is Abu 'Ubaidah Bin Al-Jarrah