وَعَنْ مَالِكِ بْنِ الْحُوَيْرِثِ رضى الله عنه
قَالَ: قَالَ لَنَا اَلنَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ -«وَإِذَا حَضَرَتِ اَلصَّلَاةُ فَلْيُؤَذِّنْ لَكُمْ أَحَدُكُمْ.». اَلْحَدِيثَ أَخْرَجَهُ اَلسَّبْعَةُ. 11 صحيح
The Prophet (sallallahu alayhi wa sallam) said to us, “When the time of Salat (prayer) comes, one of you should announce the Adhan.”.
Bulugh al-Maram 236, Book 2, The Book of Prayer, Hadith 57. 1 min read