It was narrated that Abu Hurairah said:"The Messenger of Allah said: 'When the Mu'adh-dhin calls the Adhan, say as he says
Hadith No. 718
Sunan Ibn Majah
Gradings:
Al-Albani:
Sahih
Muhammad Fouad Abd al-Baqi:
Sahih
Zubair Ali Zai:
Hasan