Muhammad bin Ishaq said: When the Messenger of Allah (peace and blessings be upon him) came here (Imam Dari, may Allah have mercy on him, said meaning) to Madinah, people used to gather for prayer at the appointed times without any call to prayer. So the Messenger of Allah (peace and blessings be upon him) intended to have a horn made like that of the Jews (a trumpet) with which they would call people to prayer, but then he disliked it. Then he ordered for a clapper to be made, which was carved so that it could be struck for the Muslims’ prayers. Meanwhile, Abdullah bin Zayd bin Abd Rabbah (who was the brother of Harith bin Khazraj) saw a dream. So he came to the Messenger of Allah (peace and blessings be upon him) and said: O Messenger of Allah! Last night, while I was sleeping, a man passed by me who was wearing two green garments and was carrying a clapper in his hand. I said: O servant of Allah, will you sell this clapper? He said: What will you do with it? I said: We will call people to prayer with it. He said: Shall I tell you something better than that? I said: What is it? He said: Say like this. «الله أكبر الله أكبر، الله أكبر الله أكبر، أشهد أن لا إله إلا الله، أشهد أن لا إله إلا الله، أشهد أن محمدا رسول الله، أشهد أن محمدا رسول الله، حي على الصلاة، حي على الصلاة، حي على الفلاح، حي على الفلاح، الله أكبر الله أكبر، لا إله إلا الله» Then that man paused for a while and then repeated these words one by one, except: «قد قامت الصلاة، قد قامت الصلاة، الله أكبر الله أكبر، لا إله إلا الله» (meaning he recited the Iqamah). When Abdullah bin Zayd informed the Messenger of Allah (peace and blessings be upon him) about this, he said:“Insha’Allah, this is a true dream, so go to Bilal (may Allah be pleased with him) and teach him, for he has a louder voice than you.”Then when Bilal gave the Adhan and Umar bin Khattab (may Allah be pleased with him) heard it while sitting in his house, he came dragging his lower garment to the Messenger of Allah (peace and blessings be upon him) and said: O Messenger of Allah! By the One Who sent you with the truth, I saw the same in my dream. The Messenger of Allah (peace and blessings be upon him) said:“Alhamdulillah, this is even more true.”

Muhammad bin Abdur-Rabbah narrated from his father in the same manner (as the aforementioned hadith).

Muhammad bin Abdullah bin Zaid bin Abdur-Rabbah said: My father Abdullah bin Zaid said: When the Messenger of Allah ( صلی اللہ علیہ وسلم ) ordered for the bell (naqus) . . . and then narrated the aforementioned hadith.