It is narrated from Sayyiduna Sa’ib bin Yazid that during the blessed era of the Prophet (ﷺ), there was only one muezzin appointed, who would give the adhan after the Prophet (ﷺ) sat on the pulpit, and after descending from the pulpit, he would also say the iqamah. This continued during the time of Sayyiduna Abu Bakr as-Siddiq and Sayyiduna Umar as well.