Jami` at-Tirmidhi 3842
جامع الترمذي#3842SahihNarrated 'Abdur-Rahman bin Abu 'Umairah - and he was one of the Companions of the Messenger of Allah (ﷺ):from the Prophet (ﷺ), that he said to Mu'awiyah: "O Allah, make him a guiding one, and guide (others) by him
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
Zubair Ali ZaiIsnaad Sahih
In-book reference: 49:242