Sayyiduna Abdullah bin Zaid (may Allah be pleased with him) narrates: When the Prophet Muhammad (peace and blessings be upon him) was commanded regarding the bell, that it should be rung so that people may gather for prayer, then at night while I was asleep, a person came to me who was wearing two green sheets. In his hand was a bell which he was holding. I said: O servant of Allah! Will you sell this bell? He asked: What will you do with it? I replied: I will call people to prayer with it. He asked: Shall I not guide you to something better than this? I replied: Yes. He said: When you intend to announce, then say: «اللهُأَكْبَرُ», «اللَّهُأَكْبَرُ», «اللَّهُأَكْبَرُ», «اللَّهُأَكْبَرُ», «أَشْهَدُأَنلَّاإِلَهَإِلَّااللَّهُ», «أَشْهَدُأَنْلَاإِلَهَإِلَّااللَّهُ», «أَشْهَدُأَنَّمُحَمَّدًارَسُولُاللَّهِ», «أَشْهَدُأَنَّمُحَمَّدًارَسُولُاللهِ», «حَيَّعَلَىالصَّلَاةِ», «حَيَّعَلَىالصَّلَاةِ», «حَيَّعَلَىالْفَلَاحِ», «حَيَّعَلَىالْفَلَاحِ»«اللَّهُأَكْبَرُ», «اللَّهُأَكْبَرُ», «لَاإِلَهَإِلَّااللَّهُ» Then he moved back a little and said: When you are about to establish the prayer (i.e., say the Iqamah), then say: «اللَّهُأَكْبَرُ», «اللَّهُأَكْبَرُ», «أَشْهَدُأَنْلَاإِلَهَإِلَّااللهُ», «أَشْهَدُأَنَّمُحَمَّدًارَسُولُاللَّهِ», «حَيَّعَلَىالصَّلَاةِ»«حَيَّعَلَىالْفَلَاحِ», «قَدْقَامَتِالصَّلَاةُ», «قَدْقَامَتِالصَّلَاةُ», «اللَّهُأَكْبَرُ», «اللَّهُأَكْبَرُ», «لَاإِلَهَإِلَّااللَّهُ» (Sayyiduna Abdullah bin Zaid (may Allah be pleased with him) narrates:) When morning came, I went to the Prophet Muhammad (peace and blessings be upon him) and informed him about this. The Prophet (peace and blessings be upon him) said: If Allah wills, this dream will become reality. Get up and teach these words to Bilal which you have seen (in the dream), so he may call the Adhan accordingly, for his voice is louder than yours. So I stood with Sayyiduna Bilal (may Allah be pleased with him) and I kept telling him those words and he kept calling the Adhan accordingly. When Sayyiduna Umar (may Allah be pleased with him) heard his voice, he was at his house at the place called "Zawra". He came dragging his cloak and said: By the One Who sent Muhammad (peace and blessings be upon him) with the truth! I was also shown a dream like he was shown. So the Prophet (peace and blessings be upon him) said: All praise is due to Allah alone for this.
Hadith Referenceصحیح ابن حبان / كتاب الصلاة / 1679
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيحسن صحيح - «صحيح أبي داود» (512).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده قوي، ابن إسحاق: هو محمد بن إسحاق بن يسار المطلبي مولاهم المدني إمام المغازي، صدوق، وقد صرح بالتحديث فانتفت شبهة تدليسه، وباقي رجاله على شرط الصحيح