Sunan Ibn Majah 108
سنن ابن ماجه#108SahihIt was narrated that Abu Dharr said:"I heard the Messenger of Allah say: 'Allah has placed the truth on the tongue of 'Umar, and he speaks with that (truth)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih