Jami` at-Tirmidhi 3682
جامع الترمذي#3682SahihNarrated Nafi':from Ibn 'Umar, that the Messenger of Allah (ﷺ) said: "Indeed Allah has put the truth upon the tongue and in the heart of 'Umar." He said: "And Ibn 'Umar said: 'No affair occurred among the people, except that they said something about it, and 'Umar said something about it'" or he said - "Ibn Al-Khattab" - Kharijah (one of the narrators) had a doubt about it - "except that the Qur'an was revealed in line with what 'Umar had said
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiIsnaad Hasan
In-book reference: 49:78