Hadithcore
Mishkat al-Masabih, 1119

Ibn ‘Abbas reported God’s Messenger as saying, “Let the best among you call the <i>adhan</i> for you, and the Qur’an readers act as your <i>imams</i>.” Abu Dawud transmitted it.

عَنِ ابْنِ عَبَّاسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لِيُؤَذِّنْ لَكُمْ خِيَارُكُمْ وليؤمكم قراؤكم» . رَوَاهُ أَبُو دَاوُد

References1 variant
In-Book Reference
Book 4, Hadith 536