(3) باب السُّنَّةِ فِي الأَذَانِ
It was narrated that Ziyad bin Harith As-Suda'i said:
"I was with the Messenger of Allah on a journey, and he commanded me to call the Adhan. Bilal wanted to call the Iqamah, but the Messenger of Allah said: 'The brother of Suda' called the Adhan, and the one who calls the Adhan is the one who calls the Iqamah.'"
Reference: Sunan Ibn Majah 717
In-book reference: Book 3, Hadith 12
English translation: Vol. 1, Book 3, Hadith 717