Jami` at-Tirmidhi 516

جامع الترمذي#516Sahih

As-Sa'ib bin Yazid narrated:"The Adhan during the time of Allah's Messenger, Abu Bakr, and Umar was when the Imam came out, [and when] the Iqamah was called for the Salat. Then Uthman [may Allah be pleased with him] added a third call at Az-Zawra

Scholarly Authentication

We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:

Ahmad Muhammad ShakirSahih

Al-AlbaniSahih

Bashar Awad MaaroufHasan Sahih

Zubair Ali ZaiSahih Bukhari

In-book reference: 4:29

All of Jami` at-Tirmidhi