Dhahabi on Abu Musa Al Ash’ari (رضي الله عنه)
Imam Adh Dhahabi said:
He (Abu Musa Al Ash’ari (رضي الله عنه)) was knowledgeable, active, righteous and a reciter of Qur’an; he had the most beautiful voice when he recited Qur’an. He recited good and blessed knowledge and was the most knowledgeable of the people of the Basra of the Qur’an and Islam.
[Tadhkirat al Huffadh]