The Book of the Adhan (The Call to Prayer)
7/10. Chapter:
Should They Call The Adhan Together or Separately?
Sunan an-Nasai
أَخْبَرَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ، عَنْ هُشَيْمٍ، قَالَ أَنْبَأَنَا مَنْصُورٌ، عَنْ خُبَيْبِ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ عَمَّتِهِ، أُنَيْسَةَ قَالَتْ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِذَا أَذَّنَ ابْنُ أُمِّ مَكْتُومٍ فَكُلُوا وَاشْرَبُوا وَإِذَا أَذَّنَ بِلاَلٌ فَلاَ تَأْكُلُوا وَلاَ تَشْرَبُوا " .
It was narrated from Khubaib bin 'Abdur-Rahman that his paternal aunt Unaisah said: "The Messenger of Allah (S.A.W) said: 'When Ibn Umm Maktum calls the Adhan, eat and drink, and when Bilal calls the Adhan, do not eat nor drink."
Reference : Sunan an-Nasa'i 640In-book reference : Book 7, Hadith 15English translation : Vol. 1, Book 7, Hadith 641