Sunan An Nasai
632
It was narrated that Abu Mahdhura said:
The Messenger of Allah taught me the Adhan and said: 'Allahu Akbar, Allahu akbar, Allahu Akbar, Allahu Akbar; Ashhadu an la ilaha illallah, Ashhadu an la ilaha illallah; Ashhadu anna Muhammadan Rasulallah,..
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