´It was narrated that Ibn 'Abbas said:` "The Messenger of Allah said: 'Let the best of you give the call to prayer (Adhan), and let those who are most versed in the Qur'an lead you in prayer.'"
Related hadith on this topic
Explanation & Benefits
Shaykh Umar Farooq Saeedi
590. Commentary:
The imam being a hafiz (one who has memorized the Qur'an), a scholar, and a dignified person is extremely effective in the matter of enjoining good and forbidding evil (amr bil ma'ruf wa nahi 'anil munkar); people readily accept their words.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 590