from the Prophet (ﷺ), that he said to Mu'awiyah: "O Allah, make him a guiding one, and guide (others) by him."
Jami` at-Tirmidhi Book 49, Hadith 242
← Previous Hadith "There is none with more Ahadith from the Messenger of Allah (ﷺ) than I, except for 'Abdullah bin 'Amr, for he used to write, (the Ahadith) and I did not used to write."

Jami` at-Tirmidhi Book 49, Hadith 241 Next Hadith → "When 'Umar bin Al-Khattab removed 'Umair bin Sa'd as governor of Hims, he appointed Mu'awiyah. The people said: 'He has removed 'Umair and appointed Mu'awiyah.' So 'Umair said: 'Do not mention Mu'awiyah except with good, for indeed, I heard the Messenger of Allah (ﷺ) saying: "O Allah guide (others) by him."

Jami` at-Tirmidhi Book 49, Hadith 243