It was narrated that Mujammi’ bin Yal Al-An said: “I was Sitting with Abu Umamah bin Sahl bin Hunaif when the Muadhdhin called the Adhan. He said: ‘Allahu akbar, Allahu Akbar (Allah is the Greatest, Allah is the Greatest),’ and he (also) pronounced the Takbir twice. Then he said: ‘Ashhadu an la ilaha ill-Allah (I bear witness that there is none worthy of worship except Allah),’ and he also sent the testimony twice. Then he said: ‘Ashhadu anna Muhammadan Rasal Allah (I bear witness that Muhammad is the Messenger of Allah صلی اللہ علیہ وآلہ وسلم),’ and he (also) sent the testimony twice. Then he said: ‘This is what Muawiyah bin Abi Sufyan told me, narrating from statement of the Messenger of Allah صلی اللہ علیہ وآلہ وسلم .” (Sahih)