Authentic
Mishkat al-Masabih 6244
`Abd ar-Rahman b. Abu `Amira told that the Prophet said of Mu'awiya, "O God, make him a guide who is rightly guided and guide others by him." Tirmidhi transmitted it.
وَعَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي عَمِيرَةَ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّهُ قَالَ لِمُعَاوِيَةَ: «اللَّهُمَّ اجْعَلْهُ هَادِيًا مَهْدِيًّا وَاهْدِ بِهِ» . رَوَاهُ التِّرْمِذِيّ