Sunan An Nasai
1393
As-Sa'ib bin Yazid narrated that:
The first adhan used to be when the imam sat on the minbar on Friday, at the time of the Messenger of Allah (ﷺ) and Abu Bakr and 'Umar. During the caliphate of 'Uthman, when the number of people increased, 'Uthman..
READ COMPLETE